拉伸塑性变形对304不锈钢马氏体相变规律的影响  

Effect of Tensile Plastic Deformation on Martensite Transformation for 304 Stainless Steel

作　　者：卢沛[1] 卢志明[1] 杜斌康[1] 石来民[1] 朱沈瑾[1] 

机构地区：[1]浙江工业大学机械工程学院,浙江杭州310014

出　　处：《轻工机械》2013年第5期88-91,共4页Light Industry Machinery

摘　　要：研究商用304不锈钢在不同变形量下形变诱发马氏体的行为,采用金相显微镜分析了塑性变形状态下不锈钢的微观组织,采用X射线衍射仪(XRD)定量分析了马氏体的含量。结果表明:在室温拉伸变形下,304不锈钢组织出现了由γ奥氏体向α'马氏体的转变。形变诱发马氏体体积分数随变形量的增加而增大,且增长速率也缓慢提高。同时,进一步分析了塑性变形诱发马氏体相变的机理。Different means were used to study the behavior of deformation-induced martensite by different deformation percents for commercial 304 austenitic stainless steel. The metallurgical microscope was used for observing microstrue ture under plastic deformation and X-ray diffraction was used for evaluating martensite content. The results indicate that,y→α martensite transformation is present in 304 stainless steel after tensile deformation at room temperature. The volume fraction of deformation-induced martensite increases with deformation percents increasing, and the growth rate rises slowly. Meanwhile, the mechanism of deformation-induced martensite transformation is analyzed further.

关 键 词：304不锈钢 形变马氏体 XRD分析 相变驱动力 

分 类 号：TG142.71[一般工业技术—材料科学与工程] TG115.52[金属学及工艺—金属材料]