Fe-Al/Al_(2)O_(3)阻氚涂层热处理条件对HR-2不锈钢力学性能影响  

Effect of Heat Treatment of Fe-Al/Al_(2)O_(3)Tritium Permeation Barrier on Properties of HR-2 Stainless Steel

作　　者：胡立 张桂凯[1] 向鑫[1] 杨飞龙[1] 宋雅琪 唐涛[1] HU Li;ZHANG Gui-kai;XIANG Xin;YANG Fei-long;SONG Ya-qi;TANG Tao(Institute of Materials,China Academy of Engineering Physics,Mianyang 621908,China)

机构地区：[1]中国工程物理研究院材料研究所,四川绵阳621908

出　　处：《核化学与放射化学》2021年第3期244-251,共8页Journal of Nuclear and Radiochemistry

基　　金：国家磁约束核聚变能发展研究专项(2018YFE0313100);国家自然科学基金面上项目(11975213)。

摘　　要：采用室温力学拉伸试验、显微硬度测试、X射线衍射及组织观察等方法研究了“室温熔盐电镀铝+热处理+选择性氧化”工艺路线制备Fe-Al/Al_(2)O_(3)阻氚涂层热处理过程对HR-2奥氏体不锈钢力学性能及显微组织的影响。结果表明:经热处理后的HR-2不锈钢仍然保持奥氏体组织;980℃热处理180 min时抗拉强度为580.48 MPa,硬度值为177.92 HV,伸长率为79.43%,具有优异的塑韧性;700℃热处理150 h时抗拉强度为616.47 MPa,硬度值为213.34 HV,伸长率为63.32%;经热处理后的HR-2不锈钢基体力学性能变化不大。现行的涂层制备工艺对基体材料影响较小,满足微观结构与力学性能指标。The effects of heat treatment of Fe-Al/Al_(2)O_(3)tritium permeation barrier prepared by“ambient temperature chloroaluminate melts electroplating+heat treatment+selective oxidation”on microstructure and mechanical properties of HR-2 stainless steel were investigated by means of tensile test,microhardness test,microstructure observation.The results show that after heat treatment,the microstructure of HR-2 stainless steel is still austenite.The tensile strength,total elongation and microhardness of the steel are 580.48 MPa,79.43%,177.92 HV at 980℃for 180 min and 616.47 MPa,63.32%and 213.34 HV at 700℃for 150 h respectively.The tritium permeation barrier heat treatment process has little effect on the properties of HR-2 stainless steel,and the properties meet the design index of microstructure and mechanics.

关 键 词：Fe-Al/Al_(2)O_(3)阻氚涂层 热处理 力学性能 显微组织 

分 类 号：TG161[金属学及工艺—热处理]