double tempering

double tempering

[¦dəb·əl ′tem·pər·iŋ]
(metallurgy)
A technique for ensuring the stability of the microstructure of a quench-hardened steel by subjecting it to two tempering cycles at approximately the same temperature.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
For large production lots of verification specimens (1200 specimens or more), additional steps can be used to fine-tune the process, such as double tempering, stress relief, cryotreatment, etc.
Impact Toughness Modification of NIST Low-Energy Charpy Verification Specimens for Testing at Room Temperature
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