Question: 6
Almost all materials have a crystal structure, and plastic deformation of these
materials is controlled by the crystal structure and that means the plane or planes
which all atoms will slide in the directions of stress. Explain clearly the concept of
the crystal structure and the slip mechanism, given examples of the BCC and FCC
structures.
Question: 7
Consider the Constitution point marked by the Red-Cross symbol
Select the Correct answer
350
300
250
T(°C)
(A)+L
(A)
200
150
(L)
+
(A)+(B)
L+(B)
(B)
100
0
10 20 30 40 50 60 70 80 90 100
A
Wa(%)
B
(a) Proportion of (A): 25 %, Composition of (A): 85 (W%)
Proportion of (B): 75 %, Composition of (B): 75 (W%)
(b) Proportion of (A): 65 %, Composition of (A): 60 (W%)
Proportion of (B): 35 %, Composition of (B): 40 (W%)
(c) Proportion of (A): 25 %, Composition of (A): 15 (W%)
Proportion of (B): 75 %, Composition of (B): 75 (W%)