Transcription of SUBJECT GUIDE Heat Treating
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SUBJECT GUIDE Heat Treating
Materials Park, Ohio 44073-0002 :: :: :: by ASM International :: Data shown are typical, not to be used for specification or final design. SUBJECT GuideCopyright 2015, ASM International . All rights reserved. SUBJECT GUIDE1 heat TreatingOverviewHeat Treating , as the name implies, is a series of treatments in which heat is used to alter the properties of a metal or alloy. Because time at temperature is also important, heat treatment can be further defined as a series of time-temperature treat-ments. heat treatments are used for a variety of purposes, the most important being to control the mechanical properties, especially hardness, ductility, strength, toughness, and internal is the resistance of a material to plastic indentation. Hardness values are roughly proportional to the strength of a metal and can give an indication of the wear properties of a mate-rial.
Precipitation hardening (age hardening) involves heating an alloy to a sufficiently high temperature so that enough of an alloying element is dissolved to form a supersaturated solid solu - tion. It is then rapidly cooled (quenched) to room temperature, Fig. 1 Effects of annealing on brass (Cu-35%Zn).
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