个人信息Personal Information
教授
博士生导师
硕士生导师
任职 : 国际磨粒技术学会(International Committee of Abrasive Technology, ICAT)委员,中国机械工程学会极端制造分会副主任、生产工程分会常务委员、微纳米制造技术分会常务委员,中国机械工程学会生产工程分会磨粒加工技术专业委员会副主任、切削加工专业委员会常委委员、精密工程与微纳技术专业委员会常委委员,中国机械工程学会特种加工分会超声加工技术委员会副主任,中国机械工程学会摩擦学分会微纳制造摩擦学专业委员会常务委员,中国机械工业金属切削刀具协会切削先进制造技术研究会常务理事、对外学术交流工作委员会副主任、切削先进制造技术研究会自动化加工技术与系统委员会副主任。
性别:男
毕业院校:西北工业大学
学位:博士
所在单位:机械工程学院
学科:机械制造及其自动化. 机械电子工程. 航空宇航制造工程
办公地点:机械工程学院7191
电子邮箱:kangrk@dlut.edu.cn
An investigation of the onset of elastoplastic deformation during nanoindentation in MgO single crystal (001) and (110) planes
点击次数:
论文类型:期刊论文
发表时间:2010-06-25
发表刊物:MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
收录刊物:SCIE、EI、Scopus
卷号:527
期号:16-17
页面范围:4177-4184
ISSN号:0921-5093
关键字:MgO; Nanoindentation; Pop-in; Deformation; Shear stress; Acoustic emission
摘要:Nanoindentation was performed in the (0 0 1) and (1 1 0) planes of magnesium oxide single crystal. The results showed that pop-in events were observed in both cases, which were accompanied by acoustic emissions. The energy released in a pop-in event was related to the acoustic emission energy. The pop-in indicated the onset of plastic deformation. Using the Hertzian contact theory and the measured pop-in load, the critical shear stresses for slipping on the (0 0 1) and (1 10) planes were estimated. The stress value for the (0 0 1) plane was about 17% higher than that of the (1 1 0) plane. (C) 2010 Elsevier B.V. All rights reserved.