Effect of Composition and Heat Treatment on Wear Resistance and Fatigue Strength of Medium-Carbon Steel,
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 02, 1970
- Accession Number
- AD0717055
Entities
People
- I. G. Uzlov
- V. I. Shkola
Organizations
- National Air and Space Intelligence Center