纯镁在氢化脱氢过程中的表面组织纳米化及硬度  

Surface Microstructure Nanocrystallization and Hardness of Pure Mg in Hydrogenation-dehydrogenation Process

作　　者：刘俊芳 樊建锋[1] 董洪标[1] 许并社[1] LIU Junfang;FAN Jianfeng;DONG Hongbiao;XU Bingshe(Key Laboratory of Interface Science and Engineering in Advanced Materials of Ministry of Education, Shanxi Key Laboratory of Advanced Magnesium-based Materials, Shanxi Research Center of Advanced Materials Science and Technology, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Chin)

机构地区：[1]太原理工大学材料科学与工程学院山西省新材料工程技术研究中心先进镁基材料山西省重点实验室新材料界面科学与工程教育部重点实验室

出　　处：《热加工工艺》2018年第10期159-163,168,共6页Hot Working Technology

基　　金：教育部新世纪优秀人才支持计划项目(NCET-12-1040);国家自然科学基金项目(51504162,50901048,51174143);山西省自然科学基金项目(2015011033,2015021073);教育部科学技术研究重点项目(2012017);山西省高等学校科技创新项目(2014118);山西省回国留学人员科研资助项目(2016-029);太原理工大学2014年校专项/青年基金项目(2014TD016)

摘　　要：采用氢化脱氢法研究了氢化脱氢过程中纯镁的表面组织演化机理。并对试样的硬度进行了分析。结果表明：相比原始铸态纯镁材料,经过60 h氢化脱氢后的纯镁表面获得了约10μm厚的纳米晶粒层,其表面硬度（HV4.9）是铸态材料的2.5倍。The evolution mechanism of surface microstructure of pure magnesium during hydrogenation and dehydrogenation was researched by hydrogenation dehydrogenation method. The hardness of the samples was studied. The results show that compared with the original as cast pure magnesium material, the nanocrystalline grains layer with the thickness of 10 μm on pure magnesium surface can be obtained after hydrogenation treatment for 60 h. The surface hardness（HV4.9） is 2.5 times higher than that of the as cast material.

关 键 词：纯镁 氢化脱氢 纳米晶 力学性能 

分 类 号：TG174[金属学及工艺—金属表面处理]