You made this video 10years ago.i don't know how are you now.god bless you.students like me will pray for you forever.you did a great job.thank you ma'am
here 12 years after this was posted, this still holds up as an extremely helpful video for learning materials. And this is coming from someone who really struggles with online learning!
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
@@junaidhussain4781 levers rule for phase fraction. you need to first understand what the structure might look like and then observe under a microscope
Your videos are really educational and help teach (seemingly) abstract concepts well. I did not understand this work comfortably until I was recommended your videos by a friend. Thank you for helping us learn!
You should teach Material science at my college. At least I wouldn't blank out and sleep in the class. You seriously made me understand concepts I was trying to learn through out the semester !
yt algorithm suggested this video to me after 7y. Your videos saved me at UNI. Professor couldn't teach shi*, so your explanation was the only thing that made me understand. Thank you!
You know how ridiculous and stupid my instructor is? I think he watches your videos and then comes and explains to us what he has learned Thank you very very much! I appreciate it
You are a life saver. My Professor's lecture notes are so brief unclear. This was an amazing tutorial. Plus, you have a pretty voice. Keep making videos. Cheers! :)
I'm retired and my main interest right now is metal casting. I'm interested in the possibilities and want to understand what is going on through the melting and solidification process. This has helped me a lot.
this video is the best video I have seen about this topic ! Very well explained , with details on each step, not just numerical and plugging in numbers. Thank you so much for the video ! Thumbs upp
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
First, I would like to thank you Professor for this pedagogic effort. After your permission, I would like to come back to the first cooling of the liquid C0 40. When we cool the liquid from 300°C to 225°C then 184°C we see from the diagram (Pb-Sn) that phase weight compo. is increasing in terms of Sn from 0.207 at 225°C to 0.502 at 184°C that explains the growing of the alpha crystals and the decreasing of the space occupied by the liquid. Furthermore, when following the curve on the left where we have alpha we can see that the comp of Sn increases when we come down to 184°C and at the sometime the Pb comp decreases in alpha. But in your interpretation professor you said that the crystals of alpha were rejecting Sn which is the contrary according to the latest remarks!!! For me, the alpha crystal should reject Pb instead of Sn because when we follow that part of the curve the comp of Sn increases and that of Pb decreases. The some remark can be made on the right of the diagram when you explain the beta formation. I will be so glad to know your reply to that and I would like to thank you for your efforts because I learnt a lot of details from you.
Very good. Thank you for the video. Though, i would like to add that during extreme low cooling in order to theoretecally achieve thermal equillibrium, below the eutectic temperature and close to the left of the diagram (low B concetration), it is possible to have also a phase β percipitation from α phase, due to the solubility limit decrease with temperature decrease. So in total there will be α (proeutectic) + α + β (eutectic) + β (precipitated)
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
I know these videos are super old but they are making this so much easier to understand. I have a quick question: Is the strength always the highest at the eutectic composition or is that only for this specific case where we are combining lead and tin to make solder? - Thanks in advanced if anyone can answer this.
Can I get some more clarification on the phase weight fraction? What is it aka how is it different from the chemical composition and does it have a unit? and are all the single phases a phase weight fraction of 1?
Alternating platelets resist dislocation. The alpha and beta crystalline chunks don't have these alternating platelets that resist dislocation, therefore not having the alpha and beta crystalline chunks at the eutectic composition makes it the strongest composition since the only thing present would be the alternating platelets.
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
when we go from 2 to 3, the percentage of tin is increasing in both alpha and liquid. how is this possible? she said that alpha is kicking tin out, then how come the percentage of tin increased? yes i have understood how to find the percentage out, but question is different.
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
Is there a video explaining how to find out the percent composition of primary alpha and the secondary alpha regions. Like how much of the total alpha is primary and how much is in the alternating platelets?
thank you for this helpfull video. may i ask what happens,for example a 40% sn 60% pb structure at 100 C degree. how does it seems ? again it is going to have alternating plates ? in terms of micro structre.
you saved my life..i love your voice..you are the best..im sure you heard all that before too :P but you really saved my ass cuz im having a midterm soon and i knew nothing about this chapter be4 this video..sooo thanks
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
Thanks for the lovely explanation! but I still don't get why the eutectic microstructure is stronger than the hypo- or hyper-eutectic ones, even though they have precipitates of primary alpha or beta ( which impede dislocation motion) in addition to the lamellar structure?
They do have lamellar Eutectic microstructure, but the dislocations can move easily in volumes where the proeutectic alpha and proeutectic beta are present in the hypoeutectic and hypereutectic compositions. I hope I have answered your question.
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us. Also what is alpha and beta
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us. What is eutectic
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
@@junaidhussain4781 The phase fractions are determined using the lever rule. Many textbooks can explain the lever rule better than I if you need more information than this video provides. If the material and the phases that are expected to form are known, you can search literature for micrographs of each phase to help you identify the phases forming in your material. Different phases do have different strengths. You can use nanoindentation to gather hardness and (using an equation) strength data. But if the material is known, you can find already published data bout the hardness and strength of each phase present in the material.
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
You made this video 10years ago.i don't know how are you now.god bless you.students like me will pray for you forever.you did a great job.thank you ma'am
here 12 years after this was posted, this still holds up as an extremely helpful video for learning materials. And this is coming from someone who really struggles with online learning!
i don't need to attend lectures no more, i've got all i need right here, thank u so much, jst keep making more videos, ur the best...
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
@@junaidhussain4781 levers rule for phase fraction. you need to first understand what the structure might look like and then observe under a microscope
@@mubashirahsan8524 bro complex phase diagrams gese ternery or quaternery me lever rule kese lagta
Your videos are really educational and help teach (seemingly) abstract concepts well. I did not understand this work comfortably until I was recommended your videos by a friend. Thank you for helping us learn!
you are the saviour of all materials engineering students, thankyou!
You should teach Material science at my college. At least I wouldn't blank out and sleep in the class. You seriously made me understand concepts I was trying to learn through out the semester !
Your voice is super pleasant. I've had a terrible migraine from stressing over this and other exams. thank you.
yt algorithm suggested this video to me after 7y. Your videos saved me at UNI. Professor couldn't teach shi*, so your explanation was the only thing that made me understand. Thank you!
You know how ridiculous and stupid my instructor is?
I think he watches your videos and then comes and explains to us what he has learned
Thank you very very much! I appreciate it
You are a life saver. My Professor's lecture notes are so brief unclear. This was an amazing tutorial. Plus, you have a pretty voice. Keep making videos. Cheers! :)
I'm retired and my main interest right now is metal casting. I'm interested in the possibilities and want to understand what is going on through the melting and solidification process. This has helped me a lot.
I really appreciate these videos which save my solid chemistry and physical chemistry. can't thank you enough😊😊😊
Super helpful. I'm currently studying for a test. Thank you so much for making this!
These videos helped me a lot. She made everything so easy by taking examples.
Now i am really confident to go for my exams.
Thanks : )
this video is the best video I have seen about this topic ! Very well explained , with details on each step, not just numerical and plugging in numbers. Thank you so much for the video ! Thumbs upp
thank you so so much. you can't even begin to imagine how much this helped me. i love you. you're amazing
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
saved my studying time. You are great
Fantastic explanation. I watched this for a revision on the topic and came away learning some new things! Thanks v much for all the effort.
BAMF for realskiez... Thank-you so much! I appreciate the time and generosity you gave to make these videos.
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
A very good tutorial. Keep posting the videos and happy engineering! - from a student in Nuclear engineering at UOIT
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
Thanks for helping me learn! Your videos are absolutely fantastic!
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
I really loved your teaching style. This video help me making one of my assignment which i was worried for. Thank u ❤
thanks to you i don't have to go to class, i'm saving so much money on gas and learning much more than i would from my prof :D
First, I would like to thank you Professor for this pedagogic effort. After your permission, I would like to come back to the first cooling of the liquid C0 40. When we cool the liquid from 300°C to 225°C then 184°C we see from the diagram (Pb-Sn) that phase weight compo. is increasing in terms of Sn from 0.207 at 225°C to 0.502 at 184°C that explains the growing of the alpha crystals and the decreasing of the space occupied by the liquid.
Furthermore, when following the curve on the left where we have alpha we can see that the comp of Sn increases when we come down to 184°C and at the sometime the Pb comp decreases in alpha.
But in your interpretation professor you said that the crystals of alpha were rejecting Sn which is the contrary according to the latest remarks!!!
For me, the alpha crystal should reject Pb instead of Sn because when we follow that part of the curve the comp of Sn increases and that of Pb decreases.
The some remark can be made on the right of the diagram when you explain the beta formation.
I will be so glad to know your reply to that and I would like to thank you for your efforts because I learnt a lot of details from you.
You're 100% better than my professor, thank you!
Thank all people who made those videos, I wish you all the luck.
voice is cute, the cool-down of hypoeut. part really helps a lot. thank you!
Life saver! Well explained and detailed without being dull!
Very good. Thank you for the video. Though, i would like to add that during extreme low cooling in order to theoretecally achieve thermal equillibrium, below the eutectic temperature and close to the left of the diagram (low B concetration), it is possible to have also a phase β percipitation from α phase, due to the solubility limit decrease with temperature decrease. So in total there will be α (proeutectic) + α + β (eutectic) + β (precipitated)
Crystal clear, no pun intended. This is engineering gold!
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
This video really helped me. I didn't know how to do my tutorial until I saw this. Thanx a lot
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
Why do you whisper? I need to have my speakers up so loud for this.
update: Hands down the best video I've found so far, thank you.
Thank you so much!! This was way clearer than the way my professor explained this in lecture.
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
I know these videos are super old but they are making this so much easier to understand. I have a quick question: Is the strength always the highest at the eutectic composition or is that only for this specific case where we are combining lead and tin to make solder? - Thanks in advanced if anyone can answer this.
Can I get some more clarification on the phase weight fraction? What is it aka how is it different from the chemical composition and does it have a unit? and are all the single phases a phase weight fraction of 1?
You are great.You solved my all doubts very easily,thank you.
can you please write why is the maximum strength at the eutectic composition ?
Alternating platelets resist dislocation. The alpha and beta crystalline chunks don't have these alternating platelets that resist dislocation, therefore not having the alpha and beta crystalline chunks at the eutectic composition makes it the strongest composition since the only thing present would be the alternating platelets.
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
just took a test and this made me feel very prepared !!!!!!
when we go from 2 to 3, the percentage of tin is increasing in both alpha and liquid. how is this possible? she said that alpha is kicking tin out, then how come the percentage of tin increased?
yes i have understood how to find the percentage out, but question is different.
Thank you so much, i have passed my subject because of your help
i really appreciate that.
god bless :)
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
Is there a video explaining how to find out the percent composition of primary alpha and the secondary alpha regions. Like how much of the total alpha is primary and how much is in the alternating platelets?
Its very clear to understand, even Im learning this in another language 👌🫶🥹 Much appreciate
thank you for this helpfull video.
may i ask what happens,for example a 40% sn 60% pb structure at 100 C degree. how does it seems ? again it is going to have alternating plates ? in terms of micro structre.
you saved my life..i love your voice..you are the best..im sure you heard all that before too :P but you really saved my ass cuz im having a midterm soon and i knew nothing about this chapter be4 this video..sooo thanks
She is like the organic chemestry tutor for mechanical engineers bro 10/10
Literaly better explained than my phd teacher in 4 hours of class
Is there a way of calculating primary alpha and/or primary beta composition and weigth percent composition?
I think you would do it as if you were on the eutectic line
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
thumbs up for your effort. really nice and helpful lecture series.
Like your confidence, and love you explanation
thank you for your nice videos. the eutectum and iron phase diagram are very very helpful.
How much alpha is for example at T=182 and 40% Sn in the eutectic structure and how much is left for the alpha plates?
You're making amazing vids, thank you so much for your help.
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
your video is helped me a lot for my exam
great lecture
why did you plus instead of minusing when working out phase wt fract
Thank you so much! These videos have been very helpful :)
hey! quick question, In the hypoeutectic region, do the alpha crystals stay when the temperature keeps getting lower than the eutectic temperature?
Yes.
Hi, can atoms when in solid region move between different phases?
Thanks for the lovely explanation! but I still don't get why the eutectic microstructure is stronger than the hypo- or hyper-eutectic ones, even though they have precipitates of primary alpha or beta ( which impede dislocation motion) in addition to the lamellar structure?
They do have lamellar Eutectic microstructure, but the dislocations can move easily in volumes where the proeutectic alpha and proeutectic beta are present in the hypoeutectic and hypereutectic compositions. I hope I have answered your question.
plus the proeutectic phases act as stress concentrations. Theres a reason why you want them as circle rather than 'spears'
This is such a great lecture! Thanks!
Thank you! You explained this so well!
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us. Also what is alpha and beta
i signed up just to like this video omgg thank u very much
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
you've and you will still save many asses girl ! cheers to your helpful spirit
Thanks that helped me to understand how grains react when the eutectic is forming !
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us. What is eutectic
@@junaidhussain4781 few, that was 6 years ago, sorry 😂
How come the chemical composition sums don't always equal to one?
Colton Skillings which ones? The weight fractions, the solubility limits, or something else?
Thank you so much for the video! It made the concepts extremely clear for me! Looking forward to seeing this in my Materials Science Exam :)
Thanks very much, very clear description.
Omg that was so well explained, thanks !
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
So goood.......cover my all concepts
It's the night before my final and I was completely lost with phase diagrams until I found this.
Probably because of that common core math XD
thx, help me alot to remember all this lesson from the past!
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
You're amazing! God bless you sista!
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
What a video.... ! really life saver :)
ur the best OMG your a savior props :)
You are an amazing woman.
weird
@@bunstie5208 4 years ago lol
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
great video :)
thank you, waiting for more
Nice explanation. Great
Love this! To the point.
Thanks so much this was super helpful!
Great video!!
thanks maam
Why the eutectic microstructure have the highest strength?
Well structured. Thank you!
The voice💕
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
Great video, thank you very much
Great videos! thanks a lot
thanks for wonderful lecture
thank you so much
205
thanks this is extremely helpful
you are amazing!!!!!!!!!!!!!!!!!!!!!
You DA Best
helped me a lot .. thanks
I love you really but please ... breathe.. it makes me anxious!
Thought of commenting the same😀😂
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
gees!! I get it now; well done
this is dope !
SOOOO helpful!!
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
@@junaidhussain4781 The phase fractions are determined using the lever rule. Many textbooks can explain the lever rule better than I if you need more information than this video provides. If the material and the phases that are expected to form are known, you can search literature for micrographs of each phase to help you identify the phases forming in your material. Different phases do have different strengths. You can use nanoindentation to gather hardness and (using an equation) strength data. But if the material is known, you can find already published data bout the hardness and strength of each phase present in the material.
great video
thanks all the best in your life
Great tutorial! god bless
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
extremely helpful thanks..
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
saved my butt, thank you!!
Hi i need help, how it got phase fraction from these numbers, also how would you determine the material from microscope, can it have an shape like phase, also could information from strength can help us.
thank you so much