不同热处理对X80钢腐蚀性能的影响  

Effect of Different Heat Treatment on the Corrosion Resistance of X80 Steel

作　　者：刘阁[1] 王岩[2] 韩嘉娱 李邱林 宋永石 LIU Ge;WANG Yan;HAN Jia-yu;LI Qiu-lin;SONG Yong-shi(School of Robot Engineering,Yangtze Normal University,Chongqing 408000,China;Sichuan College of Architectural Technology,Chengdu 618000,China)

机构地区：[1]长江师范学院机器人工程学院,重庆408000 [2]四川建筑职业技术学院,四川成都618000

出　　处：《材料保护》2020年第11期36-40,共5页Materials Protection

基　　金：四川高等学校油气田材料重点实验室资助项目(X151516KCL01);四川省教育厅重点项目(15ZA0057);涪陵区科委项目(FLKJ,2018BBA3047)。

摘　　要：为寻找最优的X80钢热处理工艺,采用材料组织分析法及性能测试,研究了不同热处理对X80钢组织与性能的影响。结果表明:适宜的热处理可以提高X80钢的耐腐蚀性能。其中,880℃保温20 min+水淬热处理工艺比其他热处理工艺可以得到较好的抗腐蚀性能。随着回火温度的升高,其冲击韧性相应增加。残余奥氏体、铁素体和板条状马氏体可以提高X80管线钢的抗腐蚀性能。880℃保温20 min+水淬+550℃保温40 min空冷后X80钢的腐蚀速率较高,腐蚀最严重。In order to select the optimal thermal process,the microstructure and performance of X80 steel after different heat treatment were investigated by material structure analysis and performance test.Results showed that the heat treatment could improve the corrosion resistance of X80 steel.When the sample was heat-treated at 800℃for 20 min and post-quenched in water,the optimum corrosion resistance was obtained.With the increase of tempering temperature,the pounding tenacity increased.Furthermore,the residual austenite,ferrite and slaty martensite could improve the corrosion resistance X80 steel.After heat-treated at 800℃for 20 min by water quenching and then heat-treated at 550℃for 40 min by air-cooling,the X80 steel presented the worst corrosion with higher corrosion rate.

关 键 词：X80钢 热处理 高温高压釜腐蚀 电化学 SEM 组织 耐腐蚀性能 

分 类 号：TG44[金属学及工艺—焊接] TG172