The critical degree of cold work lies between _____ of cold work.
A. 2% and 20%
B. 5% and 10%
C. 7% and 15%
D. 20% and 30%
Answer:A
The critical degree of cold work lies between _____ of cold work.
A. 2% and 20% B. 5% and 10% C. 7% and 15% D. 20% and 30%
Explanation: There exists some critical degree of cold work below which recrystallization cannot be made to occur; normally, this is between 2% and 20% cold work.