Question

4 Based on the given Cu-Zn phase diagram in figure 1, identify all the microstructural changes in terms of phases changes) for Cu-30 wt% Zn and Cu-40 wt.% Zn alloy when they are slowly cooled down to room temperature from their melting temperatures. What are the temperatures where phase changes occur during solidification of the alloys?

4 Based on the given Cu-Zn phase diagram in figure 1, identify all the microstructural changes in terms of phases changes) for Cu-30 wt% Zn and Cu-40 wt.% Zn alloy when they are slowly cooled down to room temperature from their melting temperatures. What are the temperatures where phase changes occur during solidification of the alloys?

4 Based on the given Cu-Zn phase diagram in figure 1, identify all the microstructural changes in terms of phases changes) for Cu-30 wt% Zn and Cu-40 wt.% Zn alloy when they are slowly cooled down to room temperature from their melting temperatures. What are the temperatures where phase changes occur during solidification of the alloys?

4 Based on the given Cu-Zn phase diagram in figure 1, identify all the microstructural changes in terms of phases changes) for Cu-30 wt% Zn and Cu-40 wt.% Zn alloy when they are slowly cooled down to room temperature from their melting temperatures. What are the temperatures where phase changes occur during solidification of the alloys?

Answer 1

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Note: All the uploaded 4 questions are the same

o Civen alloy : a) Cu-301.21 and 6) Cu-40%. Zn Considering (a) alloy has 70%. Cu and 30% zu From phase diagram, it is seen that This alloy is in complete liquid state at above oppo'c, as it cools slowly, at around 960°c & starts to from thi liquid (L) and continues and forms fully ď below 990°c down slowly to grow d L x below 920°c Liquid alove good XXL in between [960c-920°c this alloy ; considering alloy (b) Cu-40% Zn it is seen that, is in fully liquid state above 900°C., as it cools From phase diagram

feaction of ß forme and remaining liquid transforms to and some part of ß transforms to ß' below 420°c., which is termed an oldered solid solution. → →L Liquid above 900°c A B between alep' below 4256 [ 880°-900c] -ß lietueen (800°C-480°C] xeß Bce there & is FCC ß is ii an aldered structure Toto & of Csel.