Home > Blossary: Heat Treatment
Heat Treatment is the controlled heating and cooling of metals to alter their physical and mechanical properties without changing the product shape. Heat treatment is sometimes done inadvertently due to manufacturing processes that either heat or cool the metal such as welding or forming. Heat Treatment is often associated with increasing the strength of material, but it can also be used to alter certain manufacturability objectives such as improve machining, improve formability, restore ductility after a cold working operation. Thus it is a very enabling manufacturing process that can not only help other manufacturing process, but can also improve product performance by increasing strength or other desirable characteristics.

Category: Engineering

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Created by: Naveed

Number of Blossarys: 5

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The term annealing,until and unless specified,means full annealing.It consists of heating steel to austenitic region,followed by slow cooling.Steel is heated to about 30 to 50 degree above the upper ...

Domain: Materials science; Engineering; Education; Category: Metallurgy; Mechanical engineering; Knowledge

Hardening treatment consists of heating to hardening temperature,holding at that temperature followed by rapid cooling such as quenching in water,oil or salt baths.

Domain: Materials science; Education; Engineering; Category: Metallurgy; Knowledge; Mechanical engineering

In this process,hypoeutectoid steel is heated above the upper critical temperature and held for some time at this temperature.This is done in order to get a completely austenitic structure and to ...

Domain: Materials science; Engineering; Education; Category: Metallurgy; Mechanical engineering; Knowledge

Martempering involve heating the steal to the austenitizing temperature, followed by quenching in a constant temperature bath maintained above Ms point and the usual temperature of bath lies between ...

Domain: Materials science; Engineering; Education; Category: Metallurgy; Mechanical engineering; Knowledge

Nitriding is most effective for those alloy steels which contain stable nitride forming elements such as aluminum,chromium,molybdenum,vanadium and tungsten.Nitriding is carried out in a ferritic ...

Domain: Materials science; Engineering; Education; Category: Metallurgy; Mechanical engineering; Knowledge

Normalizing is a process of heating steel to about 40 to 50 degree above upper critical temperature,holding for proper time,and then cooling in still air or at room temperature.

Domain: Materials science; Engineering; Education; Category: Metallurgy; Mechanical engineering; Knowledge

Partial annealing is also referred to as interstitial annealing or incomplete annealing.In this process,steel is heated between the lower critical temperature and the upper critical temperature.

Domain: Materials science; Engineering; Education; Category: Metallurgy; Mechanical engineering; Knowledge

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