Effect of Cr content on hardenability of 65Mn steel

doi:10.13251/j.issn.0254-6051.2020.07.033

Abstract

Abstract: To study the effect of Cr on the hardenability of 65 Mn steel, the end quenching test of four groups of specimens with Cr content of between 0%-0.5%(mass fraction) was carried out. The hardness and microstructure of the quenched specimens were tested. The results show that with the decrease of cooling rate, the martensite content in the quenched specimens is reduced from 100% to 0%, and the hardness is reduced from 62 HRC to 23 HRC. The Cr content significantly improves the hardenability of 65Mn steel, and the 0.1% Cr can improve about 50% of the hardened zone depth.

Key words: 65Mn steel, Cr, hardenability, end quenching

CLC Number:

TG142.1

Sun Yiqiang. Effect of Cr content on hardenability of 65Mn steel[J]. Heat Treatment of Metals, 2020, 45(7): 163-166.

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