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It is important to study the effect of cooling during quenching on the magnitude and distribution of residual stresses that remain in parts after their complete cooling, because the service life of machine parts depends on mechanical properties of the material as well as residual stresses. Tensile stresses at the surface of a hardened part reduce its service life, while compressive stresses increase the service life. Furthermore, tensile stresses produce a greater propensity for quench crack formation.
Kobasko, N. I.
IQ Technologies, Inc.Intensive Technologies Ltd., AkronKyiv, Ohio