残余奥氏体及其稳定化对GCr15钢扭转流变硬化行为的影响  

EFFECT OF RETAINED AUSTENITE AND ITS STABILIZATION ON TORSIONAL FLOW HARDENING BEHAVIOUR OF GCrl5 STEEL

作　　者：黄明志[1] 淡育煦[1] 张凡[1] 白海江[1] 

机构地区：[1]西安交通大学

出　　处：《钢铁》1993年第3期50-52,43,共4页Iron and Steel

摘　　要：本文通过残余奥氏体及其稳定化对GCr15钢扭转流变硬化行为和低周次扭转断裂行为影响的对比分析,以及与已有的接触疲劳试验结果相应变化一致性的讨论,揭示了残余奧氏体稳定化何以能有效提高接触疲劳寿命的原因,在于稳定残余奥氏体有较稳定的加工硬化能力和调整变形不均匀性能力,从而可以在保持强度水平相同条件下提高材料的断裂应变所致。In this paper, the effect of retained austenite and its stabilization on torsional flow hardening and low cyclic torsional fatigue bebaviour has been compared and analysed. Through the discussion on the coincidence between the on hand results of contact fatigue experiment and the effect of austenite mentiorod above, the cause about the increase of contact fatigue life which may be influenced by the stability of retained austenite could be revealed. That is, the stabilization of retained austenite csn improve the inhomogenity in deformation due to its more stable strain hardening ability. So that the fracture strain of materials can be raised to a great deal while not improving itsstrength and hardness.

关 键 词：残余奥氏体 GCR15钢 加工硬化 接触疲劳寿命 断裂行为 应变 稳定化 转流 性能力 影响 

分 类 号：TF762.4[冶金工程—钢铁冶金] TG142[一般工业技术—材料科学与工程]