200系不锈钢热轧缺陷分析  

Analysis of Hot-rolled Defects of 200 Series Stainless Steel

作　　者：李振锋 王鑫铭 丁卉 胡静娴 尹付成 田伟光 徐佳林 LI Zhenfeng;WANG Xinming;DING Hui;HU Jingxian;YIN Fucheng;TIAN Weiguang;XU Jialin(Department of Technical,AECC South Industry Co.,Ltd.,Zhuzhou 412002,China;School of Materials Science and Engineering,Xiangtan University,Xiangtan 411105,China;Department of Research and Development,Jianglu Machinery and Electronics Group Company Limited,Xiangtan 411100;Department of Technical Quality,Guangdong Guangqing Metal Technology Co.,Ltd.,Yangjiang 529533,China)

机构地区：[1]中国航发南方工业有限公司技术部,湖南株洲412002 [2]湘潭大学材料科学与工程学院,湖南湘潭411105 [3]江麓机电集团有限公司研发管理部,湖南湘潭411100 [4]广东广青金属科技有限公司技术质量部,广东阳江529533

出　　处：《热加工工艺》2021年第3期159-162,共4页Hot Working Technology

摘　　要：国内某企业在生产200系不锈钢热轧板的过程中,发现一种成分的热轧板常出现裂纹,导致产品报废。为了分析这一原因并解决问题,本文通过热力学计算对给定成分的200系不锈钢进行了凝固过程模拟。在此基础上,采用光学显微镜、扫描电镜等对该不锈钢在热轧过程中出现裂纹的原因进行了分析。结果表明:沿晶界析出的碳化物、马氏体和σ相是导致不锈钢开裂的主要原因。In the process of producing 200 series stainless steel hot rolled plate in a enterprise in China, it is found that the crack often occurs in hot rolled plate with a component, which leads to the product scrapping. In order to analyze this cause and solve the problem, the solidification process of 200 series stainless steel with given composition was simulated by thermodynamic calculation. On this basis, the causes of cracks in the stainless steel during hot rolling were analyzed by means of optical microscope and scanning electron microscope. The results show that the carbides, martensite and σ phase precipitated along the grain boundary are the main causes of stainless steel cracking.

关 键 词：200系不锈钢 热轧 裂纹 缺陷分析 

分 类 号：TG337.5[金属学及工艺—金属压力加工]