高温热处理对Mo-0.9La合金板材组织及力学性能的影响  

Effects of High Temperature Heat Treatment on Microstructure and Mechanical Properties of Mo-0.9La Alloy Sheets

作　　者：张晓 王快社[1] 刘仁智[2] 席莎[2] 周莎[2] 付静波 ZHANG Xiao;WANG Kuaishe;LIU Renzhi;XI Sha;ZHOU Sha;FU Jingbo(School of Metallurgy and Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China;Technical Center,Jinduicheng Molybdenum Co.,Ltd.,Xi'an 710077,China)

机构地区：[1]西安建筑科技大学冶金学院,陕西西安710055 [2]金堆城钼业股份有限公司技术中心,陕西西安710077

出　　处：《热加工工艺》2025年第2期76-79,共4页Hot Working Technology

基　　金：陕西省青年科技新星项目(2019KJXX-005);陕西省科技重大专项项目(2020ZDZX04-02-01);国家重点研发计划项目(2017YFB0305602)。

摘　　要：采用粉末冶金法制备97%以上变形量的Mo-0.9La板材,研究了不同热处理温度对Mo-0.9La合金板材组织和力学性能的影响。结果表明,随着热处理温度的升高,Mo-0.9La合金的微观组织从细密的纤维组织粗化至35μm左右的板条状搭接组织,Mo-0.9La合金的抗拉强度、屈服强度与硬度降低。在1500℃时,Mo-0.9La合金的伸长率最高,达到22%。Mo-0.9La alloy sheets with large deformation(over 97%)were prepared by powder metallurgy technology.The effects of different heat treatment temperatures on the microstructure and mechanical properties of Mo-0.9La alloy sheets were studied.The results show that,with the increase of heat treatment temperature,the microstructure of Mo-0.9La alloy transforms from fine fibre to lath structure,which is about 35μm,and the tensile strength,yield strength and hardness of Mo-0.9La alloy decrease.At 1500℃,the elongation of Mo-0.9La alloy is highest,reaching 22%.

关 键 词：Mo-0.9La合金 热处理温度 微观组织 力学性能 

分 类 号：TG166.7[金属学及工艺—热处理]