新型高锰合金钢的研制

Development of a High Manganese Alloyed Steel

在ZGMn13钢的基础上,通过调整成分,加入适量的合金元素铬、钼,得到新型高锰合金钢,经沉淀强化热处理后对其组织和性能进行了分析。结果表明：成分为1．2％～1．28％C,11％～13％Mn,≤0．02％S,≤0．04％P,≤0．65％Si,1．5 9／5～1．8％Cr,0．40％～0．50％Mo的合金钢,经沉淀强化热处理后,其奥氏体晶粒细化,碳化物弥散析出,其耐磨性和加工硬化能力提高；力学性能达到σb=766 MPa,σs=458 MPa,δ=27．245％,α_k=218 J／cm^2,硬度217 HBS。

A new high manganese alloy steel has been obtained by adjusting chemical composition and addition of alloying elements in ZGMn13 steel The structure and properties of the high manganese alloy steel after precipitation hardening heat treatment were analyzed. The high manganese alloy steel containing 1. 2%-1.28%C, 11%-13%Mn, ≤0. 02% S, ≤0. 04%P, ≤0. 65%Si, 1.5%-1.8%Cr and 0. 40%-0. 50% Mo after suitable precipitation hardening treatment could make austenitic transforming completely and refine austenitic grain, and get dispersed pellet-like carbides. The wear resistance of the steel increased via working hardening and fine dispersion of the second phase. The mechanical properties of the alloy steel could achieve σb = 766 MPa, σs= 458 MPa, δ= 27. 245%, ak=218 J/cm^2 and hardness 217 HBS.