Which of the following processes relieves internal stress caused by hardening in a metal tool?
A)compressing
B)extruding
C)shearing
D)tempering

Question

Quizplus · Accepted Answer

Tempering is a heat treatment technique applied to ferrous alloys, such as steel or cast iron, to achieve greater toughness by decreasing the hardness of the alloy. The process involves heating the metal to a temperature below its critical point, maintaining that temperature for a set period, and then allowing it to cool in still air. This process relieves the internal stresses caused by previous hardening processes, making the metal less brittle and more ductile.

Which of the Following Processes Relieves Internal Stress Caused by Hardening