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.