In metal machining, the zone where the maximum heat is generated due to the plastic deformation of metal, is called

A Friction zone
B Work-tool contact zone
C Shear zone
D None of these

Correct Answer: Shear zone

The narrow zone surrounding the shear plane in machining is termed as primary shear zone. The area surrounding the chip-tool contact region is called the secondary deformation zone. This zone consists of a part of work material (uncut chip) and a part of chip.
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