高氮马氏体不锈钢3Cr13N的热变形方程  

Hot deformation equation of high-nitrogen martensitic stainless steel 3Cr13N

作　　者：张永军[1,2] 胡伟涛[1] 韩静涛[1] ЕВСЮНОВА 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]鲍曼莫斯科国立技术大学工程技术学院,莫斯科105005

出　　处：《材料热处理学报》2014年第1期203-206,共4页Transactions of Materials and Heat Treatment

基　　金：广东省教育部科技部企业科技特派员行动计划专项项目(2009B090600099);粤港关键领域重点突破招标项目(TC09B864-6)

摘　　要：高氮马氏体不锈钢以其高硬度、高耐蚀性能顺应了刀剪材料的发展要求。利用Gleeble-1500热模拟试验机，在900～1050℃范围，0．05—0．5s-1应变速率条件下，对高氮马氏体不锈钢3Crl3N进行了高温轴向压缩试验，测得了钢的高温流变曲线。结果表明，该钢流变应力（或峰值应力盯，）和峰值应变s，随着变形温度的升高和应变速率；的降低而减小，而且，In[sinh（0．012σp）]与lnε、In[sinh（0．012σp）]与T-1都近似成直线关系。由此计算出该钢的动态再结晶激活能为443．45kJ·mol-1，并确立了该钢的热变形方程。High-nitrogen martensitic stainless steel accords with the development trends of the shear materials has higher hardness and corrosion resistance. For nitrogen-containing martensitic stainless steel 3Crl3N the axial compression test at higher temperature were carried on a Gleeble-1500 simulator at 900 ℃ to 1050 ℃ and at the strain rate of 0. 05 - 0.5 s-1. The corresponding flow curves were determined. The results show that the flow stress （ or peak stressσp ） and peak strain εp for the tested steel increase with increasing strain rate ε or decreasing deformation temperature T, the relationship between In [ sinh（0. 012σp ） ] and lnε is linear, as well as the relationship between In[ sinh （0. 012σp） ] and 10000 T-1. Therefore, the hot deformation activation energy Q of the tested steel is 443.45 kJμmol -1, and the hot deformation equation is derived based on is experiments.

关 键 词：3Cr13N 高温轴向压缩试验 流变应力 激活能 热变形方程 

分 类 号：TG142.71[一般工业技术—材料科学与工程]