Assignment 2

.Question 1

Show on the figure the following:

i. 100% intermetallic line ii. 100 % eutectic ( and AB)

iii. 100 % eutectic ( and AB) iv. the temperature in which the alloy (30% B, 70 %A) starts forming the dendrites v. the region of B percentage (B%) where the microstructure is (primary) and eutectic

vi. the solidus temperature of the alloy (30% B and 70 %A) vii. the solidus temperature of the alloy (70 % B and 30 %A).

Question 2

Using the above figure, sketch neatly the microstructure of the alloys (given in the table

below) at the room temperature and determine the amount of each phase presented.

Structure of the alloys at different compositions

i

ii

iii

iv=375 5

v= 19 %-40 %

2

Vii=500 5

vi= 350 5

100 pph AB 25 pph

Eutectic (AB

+Alpha) and

75 pph alpha

50 pph Eutectic

(AB+ alpha) and

50pph AB

50 pph Eutectic

(Beta+ AB) and

50pph Beta