Accession Number : AD0717055

Title :   Effect of Composition and Heat Treatment on Wear Resistance and Fatigue Strength of Medium-Carbon Steel,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Uzlov,I. G. ; Shkola,V. I.

Report Date : 02 SEP 1970

Pagination or Media Count : 8

Abstract : Two given heat treated medium-carbon steels were treated to reach the hardness 200, 250, 300, 350, 400, and 450 HB by the following procedures: (1) hardening initially in water and finishing in oil to obtain a martensite structure, and (2) isothermal hardening. High wear resistance, when hardened by (1) was shown only by specimens with hardness 350-400 HB. However, when the (2) was used, at conditions which gave lamellar structure of carbides, such a steel showed high wear resistance at all levels of hardness, 250-450 HB. The best wear resistance was shown by the steel containing C 0.62 percent with a mixt. of ferrite and cementite with lamellar carbides. The fatigue strength can be made higher by increasing the C concentration and hardness. (Author)

Descriptors :   (*STEEL, WEAR RESISTANCE), HEAT TREATMENT, FATIGUE(MECHANICS), CARBON ALLOYS, USSR

Subject Categories : Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE