Manufacturing and Industrial Engineering - GATE practice papers - Mechanical for Q. 389

Q.  Which process is best suitable to increase strength of material and to decrease ductility after processing? (Marks: 02)
- Published on 19 Oct 15

a. Hot working
b. Cold working
c. both a. and b.
d. none of the above

ANSWER: Cold working
 
The material grains are permanently distorted in cold working process. The material strength increases and ductility decreases in cold working process.

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