Question
Download Solution PDFWhich is a false statement about tempering? Tempering is done to
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
Tempering is a heat treatment process in which the hardness of a hardened alloy is reduced by the appropriate heat treatment process; for example, steel hardened by the formation of martensite formation can be tempered.
Tempering is a heat-treatment process consisting of reheating the hardened steel to a temperature below 400°C, followed by cooling.
Purpose of tempering the steel
Steel in its hardened condition is generally too brittle to be used for certain functions. Therefore, it is tempered. The aims of tempering are:
- to relieve the internal stresses
- to regulate the hardness and toughness
- to decrease the brittleness
- to restore some ductility
- to induce shock resistance
- to Improving the toughness (strength)
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