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austempering
austempering, vbl. n. Metallurgy. (ɔːˈstɛmpərɪŋ) [f. austenite2 + tempering vbl. n.] A quenching process used in the manufacture of steel or cast iron (see quot. 1949).1937 E. S. Davenport in Steel 29 Mar. 42/1 The heat treating process known as ‘austempering’ consists essentially of heating steel t...
Oxford English Dictionary
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Austempering
Austempering is heat treatment that is applied to ferrous metals, most notably steel and ductile iron. Austempering is defined by both the process and the resultant microstructure.
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Martempering
See also
Austempering
Tempering (metallurgy)
References
External links
Heat Treating Terms and Definitions, Engineers Edge
Metal heat treatments
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stepped
stepped, (ppl.) a. (stɛpt) [f. step n.1 and + -ed.] 1. Having a step or steps; formed in a series of steps (see step v. 12); spec. of the float or hull of a seaplane or hydroplane. Cf. step n. 15 c.1833 Loudon Encycl. Archit. §1890 In this style we have the simple gable of two lines..and the stepped...
Oxford English Dictionary
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Austempered Ductile Iron
While conventional ductile iron was discovered in 1943 and the austempering process had been around since the 1930s, the combination of the two technologies Rather, the austempering process forms acicular ferrite and austenite. The latter of these has a face-centered cubic (FCC) structure.
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austenite
austenite2 Metallurgy. (ˈɔːstɪnaɪt) [a. F. austenite (Osmond 1896, in Bull. Soc. d'Encourag. de l'Industrie 738), f. the name of Sir William C. Roberts-Austen (1843–1902): see -ite1.] (See quot. 19101.) Hence austeˈnitic a., containing austenite.1902 [see troostite 2]. 1905 Nature 18 May 69/1 The po...
Oxford English Dictionary
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Tempering (metallurgy)
These methods are known as austempering and martempering. Austempering
Austempering is a technique used to form pure bainite, a transitional microstructure found between pearlite and martensite.
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Quenching
See also
Quench press
Tempering
Martempering
Austempering
Hardening (metallurgy)
References
External links
Metal heat treatments
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Austenite
Austempering
Austempering is a hardening process that is used on iron-based metals to promote better mechanical properties. The carbon content in austenite as a function of austempering time has been established.
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Endothermic gas
carbonitriding, nitrocarburizing
Neutral hardening: low, medium and high alloy carbon steels
Normalizing: iron and steel
Sintering: powder metals
Austempering
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Carbon steel
Austempering The austempering process is the same as martempering, except the quench is interrupted and the steel is held in the molten salt bath at temperatures The disadvantage of austempering is it can be used only on a few sheets of steel, and it requires a special salt bath.
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Heat treating
These include austempering and martempering.
Tempering colors
Steel that has been freshly ground or polished will form oxide layers when heated. Salt bath furnaces
Salt baths are used in a wide variety of heat treatment processes including neutral hardening, liquid carburising, liquid nitriding, austempering
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