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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
Deformation patterns and fracture stress of beta-phase gallium oxide single crystal obtained using compression of micro-pillars
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论文类型:期刊论文
发表时间:2019-02-01
发表刊物:JOURNAL OF MATERIALS SCIENCE
收录刊物:SCIE、Scopus
卷号:54
期号:3
页面范围:1958-1966
ISSN号:0022-2461
关键字:Deformation; Fracture; High resolution transmission electron microscopy; Single crystals; Transmission electron microscopy, Compressive strain; Deformation defects; Deformation pattern; Fracture stress; Gallium oxides; Lattice bending; Lattice plane; Micro Pillars, Gallium compounds
摘要:The deformation of single-crystal beta-phase gallium oxide (or -Ga2O3) micro-pillars under compression was investigated with the aid of transmission electron microscopy. High-density stacking faults were the dominant deformation defects in the plastically deformed micro-pillars. Micro-cracks were found along (200), (001) and (010) lattice planes and fracture occurred along (200) lattice plane when compressive strain was sufficiently great. Lattice bending was also observed in the fractured pillar. The average fracture stress and strain of -Ga2O3 being measured are 7.25 +/- 1.11GPa and 3.80 +/- 0.57%, respectively, which have never been reported previously.