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or a steel with a 0.2 wt%C, what is the mass fraction and composition of phases at 600 (Please draw connections on the graph)

or a steel with a 0.2 wt%C, what is the mass fraction and composition of phases at 600 (Please draw connections on the graph)

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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For a steel with a 0.2 wt%C, what is the mass fraction and composition of phases at 600 (Please draw connections on the graph)
# Iron-Iron Carbide Phase Diagram The Iron-Iron Carbide Phase Diagram is a crucial tool in materials science and engineering for understanding the phases of iron-carbon alloys at various temperatures and carbon compositions. ## Axes and Scales - The vertical axis represents **Temperature (°C)**, ranging from 400°C to 1600°C on the left, and corresponding values of 1000 to 2500 on the right (scaled for certain regions). - The horizontal axis shows two scales for **Composition**: - The bottom axis is in **weight percent carbon (wt% C)**, ranging from 0% to 6.70%. - The top axis shows **atomic percent carbon (at% C)**, ranging from 0 to 25%. ## Phase Regions - **L (Liquid)**: The area above the topmost line indicates a liquid phase. - **δ (Delta Ferrite)**: Located just below the liquid region at lower carbon compositions, stable up to the melting point at 1538°C. - **γ (Austenite)**: Present in the central area between approximately 912°C and 1394°C. It transitions from δ at the top and is present down to the eutectoid temperature. - **α (Ferrite)**: Found below 912°C at lower carbon compositions, extending to 0.022 wt% C. - **Cementite (Fe₃C)**: Formed on the right side of the diagram, it is exposed with increasing carbon composition. - **γ + L (Liquid + Austenite)**: This region delineates the mixture of liquid and austenite phases, starting around 1147°C. - **γ + Fe₃C (Austenite + Cementite)**: Extends below austenite and liquid, indicating the coexistence of austenite and cementite. ## Important Lines and Points - **Eutectic Point (4.30 wt% C, 1147°C)**: Indicates the transition between liquid phase to a mixture of austenite and cementite. - **Eutectoid Point (0.76 wt% C, 727°C)**: The transformation point where austenite transforms into pearlite, a combination of ferrite and cementite. - **Critical Temperature Lines**: - **912°C**: Transformation line between ferrite (α) and austenite (γ)
Transcribed Image Text:# Iron-Iron Carbide Phase Diagram The Iron-Iron Carbide Phase Diagram is a crucial tool in materials science and engineering for understanding the phases of iron-carbon alloys at various temperatures and carbon compositions. ## Axes and Scales - The vertical axis represents **Temperature (°C)**, ranging from 400°C to 1600°C on the left, and corresponding values of 1000 to 2500 on the right (scaled for certain regions). - The horizontal axis shows two scales for **Composition**: - The bottom axis is in **weight percent carbon (wt% C)**, ranging from 0% to 6.70%. - The top axis shows **atomic percent carbon (at% C)**, ranging from 0 to 25%. ## Phase Regions - **L (Liquid)**: The area above the topmost line indicates a liquid phase. - **δ (Delta Ferrite)**: Located just below the liquid region at lower carbon compositions, stable up to the melting point at 1538°C. - **γ (Austenite)**: Present in the central area between approximately 912°C and 1394°C. It transitions from δ at the top and is present down to the eutectoid temperature. - **α (Ferrite)**: Found below 912°C at lower carbon compositions, extending to 0.022 wt% C. - **Cementite (Fe₃C)**: Formed on the right side of the diagram, it is exposed with increasing carbon composition. - **γ + L (Liquid + Austenite)**: This region delineates the mixture of liquid and austenite phases, starting around 1147°C. - **γ + Fe₃C (Austenite + Cementite)**: Extends below austenite and liquid, indicating the coexistence of austenite and cementite. ## Important Lines and Points - **Eutectic Point (4.30 wt% C, 1147°C)**: Indicates the transition between liquid phase to a mixture of austenite and cementite. - **Eutectoid Point (0.76 wt% C, 727°C)**: The transformation point where austenite transforms into pearlite, a combination of ferrite and cementite. - **Critical Temperature Lines**: - **912°C**: Transformation line between ferrite (α) and austenite (γ)
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