Heat treatment - Abstract The purpose of this lab was to...

Abstract
The purpose of this lab was to understand the impact of the quench method and the
heat treatment on the hardness of each material.
Introduction
Heat treating is a group of industrial and metalworking processes used to alter the
physical, and sometimes chemical, properties of a material. The most common
application is metallurgical. Heat treatments are also used in the manufacture of many
other materials, such as glass. Heat treatment involves the use of heating or chilling,
normally to extreme temperatures, to achieve a desired result such as hardening or
softening of a material. Heat treatment techniques include annealing, case hardening,
precipitation strengthening, tempering, normalizing and quenching. It is noteworthy
that while the term heat treatment applies only to processes where the heating and
cooling are done for the specific purpose of altering properties intentionally, heating
and cooling often occur incidentally during other manufacturing processes such as hot
forming or welding.