How To Remember and Draw Iron Carbon Equilibrium Diagram in Easy Way | Material Science | Basics
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- เผยแพร่เมื่อ 28 ส.ค. 2024
- How To Remember and Draw Iron Carbon Equilibrium Diagram in Easy Way | Material Science | Basics
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The Iron-Carbon Equilibrium Diagram, also known as the Iron-Carbon Phase Diagram, is a graphical representation of the phases and their composition that exist in the iron-carbon alloy system at different temperatures and carbon concentrations. This diagram is fundamental to understanding the behavior of steels and cast irons.
Key features of the Iron-Carbon Equilibrium Diagram:
Phases:
a. Ferrite (α Iron): Pure iron with a body-centered cubic (BCC) crystal structure. It is soft and ductile.
b. Cementite (Iron Carbide, Fe3C): A hard, brittle compound with an orthorhombic crystal structure.
c. Austenite (γ Iron): A high-temperature phase with a face-centered cubic (FCC) crystal structure. It is non-magnetic and can dissolve more carbon compared to ferrite.
d. Pearlite: A lamellar microstructure consisting of alternating layers of ferrite and cementite. It is a common structure in slowly cooled steels.
e. Martensite: A supersaturated solid solution of carbon in iron that forms during rapid cooling. It is very hard and brittle.
Carbon Content:
The carbon content is represented on the x-axis of the diagram. The carbon concentration typically ranges from 0% to about 6.7%.
Temperature:
The temperature is represented on the y-axis of the diagram. The temperature range covered by the diagram depends on the specific version of the diagram but usually spans from room temperature up to about 1150°C (2100°F).
Phases and Regions:
The diagram depicts the stability regions of different phases at specific temperatures and carbon concentrations. The boundaries between phases are shown as lines or curves.
The left side of the diagram (low carbon content) primarily represents the iron-rich region, where ferrite is the stable phase.
The right side of the diagram (high carbon content) represents the iron-carbide-rich region, where cementite is the stable phase.
The region between the iron-rich and iron-carbide-rich regions represents the austenitic phase field, where austenite is stable.
The transformation lines indicate the temperature at which phase transformations occur, such as the formation of pearlite or martensite during cooling or heating.
The Iron-Carbon Equilibrium Diagram provides important information about the microstructure and properties of steels and cast irons, such as hardness, strength, and ductility. It is used as a guide for heat treatment processes and alloy design to achieve desired material properties.
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It is very easiest method to draw
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Sir, is the percentage of Carbon for Eutectoid Reaction 0.8% or 0.83 % ?
Also you are saying that "Hypo Eutectic Steel and Hyper Eutectic Steel". But in my opinion there is no Eutectic Steel exists as the % of carbon increases beyond 2.1%; it would be called as Cast Iron.
The percentage of Carbon which distinguishes the steel and carbon is 2.1%.
Hope Iam not wrong.
0.8 and 0.83 anything you can write but in bits you have to specify 0.83%
And it is cast iron after 2%
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Nc
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Sir aa diagram loo i point petadamu marchipoyanuuu sir
Soryy
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Powder metallurgy kuda chappara
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What is importance of iron carbon diagram
To understand the formation of metal when it undergoes different temperatures and carbon content.
Depending on this we can tell the properties of metals and behaviour of metals
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Sorry I don't have material
Where is point O sir
Where is M point sir
Where is point I sir
Powder metterlurgy cheptara
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Oh sorry
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Eutectic, eutectoid, reactions ante yemiti, ki first explain cheyandi....
eutectic point ante liquid iron ni cool chasthe two solids form avuthaie ade austenite and cementite.
eutectoid point ante one solid form into two solids like ferrite and cementite
Ok i will explain....
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Sir I marchipoyenatlu unnaru
Maybe.
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There is no 4.3 it's 4.2...
I will check
Nice explanation kani video sagam nunchi diagram kanipincha kunda explain chesaru konchem correct chesukondi
Tappakunda.Thanks for your valuable feedback
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Bokka la explain chestunaru
Meeku ardma kakapote no problem.but konchem maryadaga matladandi
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