GCr15钢的加工硬化行为及包氏效应  

Work Hardening Behavior Bauschinger Effect of GCr15 Bearing Steel

作　　者：王顺兴[1] 黄明志[2] 谈育煦[2] 

机构地区：[1]洛阳工学院 [2]西安交通大学

出　　处：《洛阳工学院学报》1990年第3期64-69,共6页Journal of Luoyang Institute of Technology

摘　　要：本文用压缩和拉一压试验方法分别研究了淬火回火 GCr15轴承钢的加工硬化行为和包申格效应(B.E).试验结果表明,该钢经淬火回火后,在压缩加载下真应力—应变曲线分三段符合赫勒曼(Hollomon)关系,且 n_0>n_1>n_2;BE 随预应变的增加而增加;100℃回火出现反常 B.E;B.E 先随回火温度的增加而增加.而后又随回火温度的增加而减小.250℃回火,B.E 最大.The work hardening behavior and Bauschinger effect(BE)of GCr15 bearing steel quenched and tempered at different temperatures were investigated by compression and tension-compression tests sparately.The investigations show that the compression true stress-true strain curves of the steel were comformed to Hollomon relation by three stages, and n_0>n_1>n_2;the BE in creases with increasing prestrain;an abnormal BE was investi- gated in the steel tempered at 100℃ after quenching;at lower temperature,the rise in tempering temperature causes the increase in BE.But then,decrease in BE and the maxi- mum BE was gained in the steel after tempering at 250℃.

关 键 词：铬钢 轴承钢 加工硬化 包氏效应 

分 类 号：TG142.41[一般工业技术—材料科学与工程]