材料工程Issue(3)：61-66,6.DOI:10.3969/j.issn.1001-4381.2013.03.012
热加工对430铁素体不锈钢“金粉”现象的影响
Effect of Thermal Processing on the "Gold Dust" Defect of 430 Ferritic Stainless Steel
摘要
Abstract
The relationship between the intergranular corrosion and "gold dust" defects on surfaces of 430 ferritic stainless steel was investigated. On the basis of the different hot rolling tests performed on Gleeble 3800 thermal mechanical simulation and simulated coiling test after deformation, a study was conducted in order to determine the effect of thermal processing on the intergranular corrosion of 430 ferritic stainless steel. The DL-EPR was introduced to measure the susceptibility to intergranular corrosion. The results showed that the 430 ferritic stainless steel sensitization happened in the process of hot rolling, then conduce intergranular corrosion during the pickling, eventually produced the "gold dust" defects after cold rolling. It is found that the intergranular corrosion sensitization could be effectively prevented with a combination of final rapid cooling (water cooling) at the final deformation temperature of 900-950℃. By the analysis of simulated coiling test results, the intergranular corrosion susceptibility of 430 ferritic stainless steel can be further avoided and eliminated by a treatment of 650-800 ℃.关键词
"金粉"/430铁素体不锈钢/晶间腐蚀/DL-EPRKey words
"gold dust"/430 ferritic stainless steel/intergranular corrosion/DL-EPR分类
矿业与冶金引用本文复制引用
邵泽斌,陈海涛,郎宇平,朱心昆..热加工对430铁素体不锈钢“金粉”现象的影响[J].材料工程,2013,(3):61-66,6.基金项目
国家科技支撑计划(2007BAE51B01) （2007BAE51B01）
