Effects of surface deformation on corrosive wear of stainless steel in sulfuric acid solution
Effects of surface deformation on corrosive wear of stainless steel in sulfuric acid solution
复制标题
DOI：
10.1016/s0043-1648(99)00019-8
复制
发表时间：
1999-04
期刊：
影响因子：
5
通讯作者：
Xinchun Lu;Kelvin Shi;Shizhuo Li;Xiaoxia Jiang
中科院分区：
文献类型：
--
作者：
Xinchun Lu;Kelvin Shi;Shizhuo Li;Xiaoxia Jiang
研究了奥氏体、铁素体和双相不锈钢在硫酸溶液中的腐蚀磨损行为。利用透射电子显微镜、能谱仪、扫描电子显微镜、显微硬度计等手段研究了不锈钢腐蚀磨损后的表面变形机理。结果表明，当载荷大于25N时，奥氏体不锈钢的腐蚀磨损率最高，而双相不锈钢的腐蚀磨损率最低。在高载荷腐蚀磨损过程中，由于马氏体相变诱发了奥氏体不锈钢表面的脆化和腐蚀速率的增加，奥氏体不锈钢的腐蚀磨损率大大增加，但表面显微硬度却大大增加。铁素体不锈钢(FSS)在高载荷下的腐蚀磨损率也有较大幅度的提高，但在低载荷下的腐蚀磨损性能最好。DSS的腐蚀磨损率与载荷呈线性关系。两相的表面形变强化能力有很大不同。研究表明，采用合适的γ相比例进行表面形变强化是提高不锈钢耐腐蚀磨损性能的重要途径之一。
Corrosive wear behaviors of austenitic, ferritic and duplex stainless steel in sulfuric acid solution were investigated. Transmission electron microscopy with energy dispersive X-ray, scanning electron microscopy, microhardness tester, etc. were used to study the mechanism of surface deformation of stainless steel after corrosive wear tests. The result indicated that the corrosive wear rate of austenitic stainless steel (ASS) was the highest and that of duplex stainless steel (DSS) was the lowest if the applied loads were higher than 25 N. Because martensitic transformation induced brittleness and increased corrosion rate of ASS surface, the corrosive wear rate of ASS increased largely though the surface microhardness of ASS was largely increased during corrosive wear under high loads. The corrosive wear rate of ferritic stainless steel (FSS) also increased largely under high loads though FSS had the best corrosive wear resistance under low loads. The corrosive wear rate of DSS had a linear relationship with loads. The abilities of surface deformation strengthening of two phases were very different. The investigation indicated that surface deformation strengthening of DSS with proper ratio of γ phase was one of the important methods to improve corrosive wear resistance of stainless steel.