Sir, how can I express my gratitude n respect towards you... Honerable sir, please accept my Namashkaram for increasing our knowledge with such a simple n excellent lectures
Sir, your explanation is very good throughout the video, but I would like to add a point to this, these all things are true if we assume pressure remains constant. Though in your definition of equilibrium phase diagram you gave a clue that we can see variation with pressure as well, indicating you assumed it constant in temperature and composition phase diagram.
Respected Sir , I am a dental student and I have a Equilibrium phase diagram of Silver -tin system in my Dental Materials Subject. I hardly understand anything in that diagram.. kindly help me with that 🙏
It appears complicated, but not more so than the Fe-C diagram discussed later in this course. The three horizontals correspond to three invariant reactions. The lowest temperature one is a eutectic and the other two are peritectic. If you complete all the videos in the phase diagram playlist it will help.
I am calling it Cubic Close Packed (CCP) which describes the crystal structure. CCP crystal structure is FCC lattice with one atom basis. If you call it FCC you are giving only the lattice. Basis information is missing. Often by saying FCC we assume a single atom basis. But consider NaCl which also has FCC lattice but has two atom basis and is thus not CCP.
@@rajeshprasad101 Sir I gone through many NPTEL lectures.Your presentation , delivery keeping in mind targeted audience(students) and finally your response that brought you many fans like me. thank you sir I finished 75 videos of yours. And that topic wise small length videos brought more interest.
@@rajeshprasad101 every time i understand everything and in interview i explain everything to them but i dont know why they say everytime "we are not satisfied by your answer"😕
Wow! This is an _AMAAAAAZING_ description of the phase diagram. Your calm and thorough explanation of each detail made it much more understandable for me than the wild and frenetic pace at which my physics class is ordinarily taught that usually makes my brain whirl. I was absorbing the material rather than watching it whiz by as a flurry of color, points and random lines on a chart. 😰 Thank you for taking your time to share your knowledge! You are a _blessing!_ 🌟Thank you so much! 📚🌼
#GATEWaytoESE learned a lot from you Sir , After watching your video and by reading W.D.Callister , i started teaching material science . Thank you so much Sir
Maximum time I feel boared and sleepy by listening the lectures given by our professor But your is awesome 👌 I am laying down bed but still awake ⏰️ Sorry for bad English.
on viewing this video,now i will understand the concept behind the phase diagram(specially iron-carbon diagram).thank you for such a enlightening video
in iron-carbon diagram you will not find substition, bcs. Fe and C has another structures (here have Ni and Cu both CCP structures, that why is substititon possible). In Fe and C diagram you will find interstitials - basicaly explaind: In each structure, there are free spaces, vacancies or cavities, so-called interstitials, between individual atoms and ions. If an ion or atom is placed in such a vacancy, we speak of interstitial substitution or interstitial solid solution. Electrical neutrality must also be maintained with this type of substitution.
You may have some interest in a series of videos focused on reading crystallization paths in ternary diagrams: th-cam.com/video/NuvEzQX0xnk/w-d-xo.html
No, they can be considered synonymous in most cases. But sometimes you may represent metastable phases in the diagram. Then it is not really an equilibrium diagram.
It is quite common to consider CCP and FCC as synonyms. However, I wish to distinguish between them. I consider FCC as one of the 14 Bravais lattices and CCP as a crystal structure with FCC as its lattice and a single atom motif located at 0,0,0. Thus CCP is only one of the structures which can be based on an FCC lattice, Other examples of structures with FCC lattice are Diamond Cubic and NaCl.
@@introductiontomaterialsscience sir even for compositions such as AB, A2B or A3B also will it be disordered? Because in phase diagram we get a single phase solid CCP for all compositions. which will not be the case if it becomes ordered for compositions like A2B or A3B.
Sir, how can I express my gratitude n respect towards you... Honerable sir, please accept my Namashkaram for increasing our knowledge with such a simple n excellent lectures
If you are preparing for exam one night before like me. I’ll suggest you to increase playback speed to 1.5x. 😇
I am preparing 2 hours before my exam😢
It's slow in even 2x
8 hrs before😊
same here bro paper tomorrow 24/09/24
Sir, your explanation is very good throughout the video, but I would like to add a point to this, these all things are true if we assume pressure remains constant. Though in your definition of equilibrium phase diagram you gave a clue that we can see variation with pressure as well, indicating you assumed it constant in temperature and composition phase diagram.
Yes, you are right. We are discussing constant pressure diagrams with P=1 atm.
Really your a gem of a person sir
i don't know what to say i can't believe i finally understood thnkuu so much
You make complicated things become so easy.
Best explanation sir
Thank you so much
What an explanation sir ! ...thank u so much 🙏
Best with playback speed=1.5*
Thank you so much sir for grabbing these info in a clear cut way
Tremendous knowledge sir 🙏🙏🙏🙏🙏
Very clean and super explanation sir,,,,,,👏👏👏
Super explanation on this topic
Very nicely explained
very very superb explanation sir !!
Thank you sir. What book is recommended for this course?
So well explained, thanks sir
Hand writing 🔥🔥
great explanation
king of engineering !!
you are unique sir😍
Are these written notes available somewhere in form of slides?
hi sir, can the alpha, beta phases separable in solid state. As you said mechanically separable.
Please upload video lecture on ternary phase diagram.
great explanation continue
👍👍👍👍👍
Hello sir I have a doubt : Why do alloys melt over a range of temperatures?
This can be explained using free-energy composition curves. I have not discussed this concept in this series, but you can check books or website.
excellent video
Respected Sir , I am a dental student and I have a Equilibrium phase diagram of Silver -tin system in my Dental Materials Subject. I hardly understand anything in that diagram.. kindly help me with that 🙏
It appears complicated, but not more so than the Fe-C diagram discussed later in this course. The three horizontals correspond to three invariant reactions. The lowest temperature one is a eutectic and the other two are peritectic. If you complete all the videos in the phase diagram playlist it will help.
@@introductiontomaterialsscience Ok Sir🙏
As far as i know, Ni alloy is FCC, isn't it?
I am calling it Cubic Close Packed (CCP) which describes the crystal structure. CCP crystal structure is FCC lattice with one atom basis. If you call it FCC you are giving only the lattice. Basis information is missing. Often by saying FCC we assume a single atom basis. But consider NaCl which also has FCC lattice but has two atom basis and is thus not CCP.
@@rajeshprasad101 Sir I gone through many NPTEL lectures.Your presentation , delivery keeping in mind targeted audience(students) and finally your response that brought you many fans like me. thank you sir I finished 75 videos of yours. And that topic wise small length videos brought more interest.
@@rajeshprasad101 every time i understand everything and in interview i explain everything to them but i dont know why they say everytime "we are not satisfied by your answer"😕
IIITian here
Feel proud .... Completed my degree under his guidance.....A true gem of IITD
Yes bro..he is really nice teacher, explain very well.
The best teacher in this area. I am doing PhD in Shanghai and my Chinese labmates also watch these videos.
I am in Alexandria university Egypt and despite the distance between Egypt and india he really helped me
After watching this, the concept of PHASE DIAGRAM is crystal clear......
But i suggest that this subject is not for 1 day... It requires a full time...
Wow! This is an _AMAAAAAZING_ description of the phase diagram. Your calm and thorough explanation of each detail made it much more understandable for me than the wild and frenetic pace at which my physics class is ordinarily taught that usually makes my brain whirl. I was absorbing the material rather than watching it whiz by as a flurry of color, points and random lines on a chart. 😰 Thank you for taking your time to share your knowledge! You are a _blessing!_ 🌟Thank you so much! 📚🌼
#GATEWaytoESE
learned a lot from you Sir ,
After watching your video and by reading W.D.Callister , i started teaching material science .
Thank you so much Sir
Maximum time I feel boared and sleepy by listening the lectures given by our professor
But your is awesome 👌 I am laying down bed but still awake ⏰️
Sorry for bad English.
Best explanations sir thaq u very much for guidance sir....
Greetings from Iraq ☢️
Fantastic sir, thanks for sharing your valuable knowledge to us
truly a gem for any materials science student
on viewing this video,now i will understand the concept behind the phase diagram(specially iron-carbon diagram).thank you for such a enlightening video
in iron-carbon diagram you will not find substition, bcs. Fe and C has another structures (here have Ni and Cu both CCP structures, that why is substititon possible). In Fe and C diagram you will find interstitials - basicaly explaind: In each structure, there are free spaces, vacancies or cavities, so-called interstitials, between individual atoms and ions. If an ion or atom is placed in such a vacancy, we speak of interstitial substitution or interstitial solid solution. Electrical neutrality must also be maintained with this type of substitution.
if this man would be my professor, i'd be a scholar no joke.
Wow sir your explanation is amazing...😍
Thank you..I think we can maintain safety warnings against sudden change of transition in phases
great video very informative but easy to understand thank you !
Thank thanku so much for this video
You may have some interest in a series of videos focused on reading crystallization paths in ternary diagrams: th-cam.com/video/NuvEzQX0xnk/w-d-xo.html
Thanks for sharing.
@@rajeshprasad101 You're welcome; I have always enjoyed your own videos, you do a great job.
u can feel that this teacher is not just a teacher but a scientific
Tq sir I got it yesterday in exam
It helps me allot
Tq so much sir
best video to understand phase diagram.thank you.
I owe you my life
Wonderful but a bit slow explanation ..so watching it in 1.25x 😉..thank you sir
Thanks this was explained in a very simple and beautiful way ❤️❤️
Fantastic resource. Thank you
Superb explanation sir
When you notice the equilibrium spelling being editted xD
amazing explanation thankyou sir
Plz suggest any best book for material science concepts.
Is this a btech lecture for mechanical engeenering
At our institute B.Tech students of Materials, Mechanical, Chemical, Biotechnology take this course,
Sir is there any difference between phase diagram and equilibrium diagram ?
I started loving material science.
Amazing explanatuon, thanks you
Love you sir
Wonderful teaching experience,, I am very very thankful to you sir
Good explanation 🥰🥰
Very helpful sir, keep making more of such course materials
@@UtkarshSingh-sp9op TH-cam please block this offensive user
@@aniketniranjanmishra6914
😁😁😁
why not fine materials instead of course material :p
Sir ,what is supercolling?
APL102 waale kitne hai?? xD
sir is there any difference between phase diagram and equilibrium diagram ?
No, they can be considered synonymous in most cases. But sometimes you may represent metastable phases in the diagram. Then it is not really an equilibrium diagram.
Sir why we considered Ni presentation in this...mean why not cu?...kindly give me ans
I have taken %Ni as the concentration. You can take %Cu as well. Two are related %Cu=100-%Ni and both are correct.
@@rajeshprasad101... thank u sit
Sir
Itna accha koi kaise padha sakta hai....!!!!
Thanks for your kind information......
You are amazing sir❤
Cubic close packed is also termed as FCC (Face centered cubic)
It is quite common to consider CCP and FCC as synonyms. However, I wish to distinguish between them. I consider FCC as one of the 14 Bravais lattices and CCP as a crystal structure with FCC as its lattice and a single atom motif located at 0,0,0. Thus CCP is only one of the structures which can be based on an FCC lattice, Other examples of structures with FCC lattice are Diamond Cubic and NaCl.
What is beta and gamma phase?
ty very much sir
Thank you Sir
Best explanation sir
Why is it significant to mention CCP structure of in both?
So that we can say it is substitutional solid solution acc to humerothery rules
Thank you sir for explaining with such simplicity.
You are legend
Great video - thank you!
Excellent teaching......
Thanks Sir ❤👍✌
Wonderful lectures. Thanks Sir
Beautifully explained.
Amazing 🌟
Got to see this a little late
Nice sir
WOW thank you!!
Well
tq sir
Any Nandi Sir student here
Best explanation ever
Sir note provided
Sir is Cu Ni alloy a disordered solid solution or ordered solid solution?
It is disordered
@@introductiontomaterialsscience sir even for compositions such as AB, A2B or A3B also will it be disordered? Because in phase diagram we get a single phase solid CCP for all compositions. which will not be the case if it becomes ordered for compositions like A2B or A3B.
@@prakharbhalla9461 You are right. Cu-Ni alloy is disordered at all compositions.
@@rajeshprasad101 thanks sir
Thank you sir