铁素体不锈钢晶间腐蚀的机理和改善应用研究  

Research on Mechanism and Improvement Application of Intergranular Corrosion of Ferritic Stainless Steel

作　　者：胡海波 汤旭炎 Hu Haibo;Tang Xuyan

机构地区：[1]无锡晶晟科技股份有限公司,江苏省无锡市214028

出　　处：《时代汽车》2021年第7期143-145,共3页Auto Time

摘　　要：铁素体不锈钢在汽车行业使用很广泛,从电子零件到车身焊接,都要用到铁素体不锈钢,而且激光焊接是汽车系统对不同金属材料连接的一个重要方式,而不锈钢的成分对金属焊接造成的晶间腐蚀敏感性不同。不锈钢的晶间腐蚀对焊接强度的耐久性有直接影响,对焊接牢固的安全性即对汽车系统的安全性有直接影响。晶间腐蚀在不锈钢焊接工艺多少存在,本文对晶间腐蚀的发生原因和改善对策做了充分阐述。Ferritic stainless steel is widely used in the automobile industry.From electronic parts to body welding,ferritic stainless steel is used,and laser welding is an important way for automotive systems to connect different metal materials.The composition of stainless steel affects the susceptibility to intergranular corrosion caused by metal welding.The intergranular corrosion of stainless steel has a direct effect on the durability of welding strength,and has a direct effect on the safety of welding firmness,that is,on the safety of automobile systems.Intergranular corrosion exists in the stainless steel welding process.This article fully explains the causes and improvement measures of intergranular corrosion.

关 键 词：晶间腐蚀 敏化作用 贫铬区 铬化物 草酸试验法 

分 类 号：TG1[金属学及工艺—金属学]