广西科学院学报2016，Vol.32Issue(3)：161-167,7.DOI:10.13657/j.cnki.gxkxyxb.20160826.011
固溶处理温度对2507双相不锈钢组织结构及耐蚀性能的影响
Effect of Solution Treatment Temperature on Micro-structure and Corrosion Resistance of 2507 Duplex Stainless Steel
摘要
Abstract
[Objective]With the rapid development of modern industry,more and more require-ments are put forward for the use of duplex stainless steel.Therefore,in order to enlarge the applicable range of 2507 duplex stainless stell (DSS2507),the research investigated the effect of solution treatment temperature on the microstructure,hardness and corrosion resistance of DSS2507.[Methods]We used quantitative metallography and hardness methods to study the effect of solution treatment temperature on the microstructure and hardness;in addition, used electrochemical tests to study the effect of solution treatment temperature on corrosion resistance of DSS2507.[Results]Quantitative metallographic analysis showed that with the solution treatment temperature rising,alpha phase content increased and the content of aus-tenite phase reduced.When solution treatment temperature was 1 050℃ to 1 100℃,phase proportion of ferrite phase and austenitic phase reached 1∶1;when solution treatment tempera-ture was 1 000℃ to 1 050℃,hardness of DSS2507 decreased;when solution treatment temperature increased from 1 050℃ to 1 200℃, hardness increased gradually.Electrochemical tests showed that with the solution treatment temperature increasing from 1 000℃ to 1 200℃,uniform corrosion resistance and pitting cor-rosion resistance of DSS2507 increased firstly and then decreased,when the solution treat-ment temperature was at 1 050℃,the sample had the best electrochemical corrosion resist-ance.[Conclusion]When the solution treatment temperature was 1 050-1 100℃,the two-phase ratio could reach 1∶1,and when the solution treatment temperature was at 1 050℃, the sample had the best electrochemical corrosion resistance.关键词
固溶处理温度/2507 双相不锈钢/腐蚀行为Key words
solution treatment temperature/2507 duplex stainless steel/corrosion resistance分类
矿业与冶金引用本文复制引用
郑传波,陈曦..固溶处理温度对2507双相不锈钢组织结构及耐蚀性能的影响[J].广西科学院学报,2016,32(3):161-167,7.基金项目
江苏省自然科学基金项目(BK20141292)资助。 （BK20141292）
