Accession Number : AD0703005

Title :   THE HARDENING OF A TRANSITION CLASS OF STEEL BY DEFORMATION AT NEGATIVE TEMPERATURES,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Galov,A. G. ; Prokoshkin,D. A.

Report Date : 15 DEC 1969

Pagination or Media Count : 14

Abstract : The hardening of a transition class of a chromium-nickel-molybdenum steel be dilatational strain at temperatures down to -196C and with subsequent aging treatment was investigated. The effect of the temperature of hardening, and also the temperature and degree of deformation on the mechanical properties was studied. The optimum temperature of hardening was established and a sharp increase in the strength properties with a lowering of the temperature and an increase in the degree of deformation was shown. The effect of temperature and duration of aging of the hardened steel was investigated and a considerable positive effect of the overall treatment was shown. A comparison of the sensitivity to the propagation of cracks of widely used structural steels and steels hardened by deformation at negative temperatures, shows considerable advantage over the latter. (Author)

Descriptors :   (*STAINLESS STEEL, HARDENING), HEAT TREATMENT, MECHANICAL WORKING, AGING(MATERIALS), CHROMIUM ALLOYS, NICKEL ALLOYS, MOLYBDENUM ALLOYS, MECHANICAL PROPERTIES, USSR

Subject Categories : Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE