摘要
研究了410S和409L两种铁素体不锈钢板材热轧态显微组织特征、晶间腐蚀特征以及在6%FeCl3酸性腐蚀介质中的浸泡腐蚀特征。结果表明,410S在6%FeCl3酸性腐蚀介质中为分层腐蚀,409L则为均匀腐蚀。410S在0.5 mol/L H2SO4+0.01 mol/L KSCN溶液中有明显的晶间腐蚀,409L没有晶间腐蚀。综合分析表明:实验用钢410S的腐蚀特征由双相组织所致,而409L主要是由于Ti元素的添加使得碳化物的析出减少。
The microstructure,inter-crystal corrosion characteristics and corrosion characteristics in the medium of 6%FeCl3 acid corrosion of hot-rolled sheet of 410S and 409L ferritic stainless steel were researched.The results are as follow： a significant layered corrosion phenomenon is in the media of 6%FeCl3 acid corrosion of 410S,but uniform corrosion in the 409L.There is obvious tendency of intergranular corrosion in 0.5 mol/L H2SO4 ＋ 0.01 mol/L KSCN solution in 410S,but not in 409L.The analysis shows that the corrosion characteristics of testing steel 410S are induced by the dual-phase microstructure,while the corrosion characteristics of 409L ferritic stainless steel is due to the decrease of carbide precipitates when adding Ti element.
出处
《热加工工艺》
CSCD
北大核心
2011年第20期68-70,共3页
Hot Working Technology
关键词
12%Cr铁素体不锈钢
双相组织
分层腐蚀
Ti稳定
晶间腐蚀
12%Cr ferrite stainless steel
dual-phase microstructure
layered corrosion
Ti stabilized
intergranular corrosion
