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个人信息Personal Information
副教授
硕士生导师
性别：男
毕业院校：大连理工大学
学位：博士
所在单位：材料科学与工程学院
学科：材料加工工程
办公地点：铸造中心301
电子邮箱：menglg@dlut.edu.cn
The contribution of long-period stacking-ordered structure (LPSO) to high strength-high ductility combination and nanoscale deformation behavior of magnesium-rare earth alloy
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论文类型：期刊论文
发表时间：2018-01-24
发表刊物：MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
收录刊物：SCIE、EI
卷号：713
页面范围：112-117
ISSN号：0921-5093
关键字：Long-period stacking-ordered structure (LPSO); Nanoscale deformation behavior; Deformation mechanism; Magnesium-rare earth alloy
摘要：The nanoscale deformation behavior of high strength (240 MPa)-high ductility (21.4%) combination Mg-rare earth alloy with long-period stacking-ordered structure was studied via nanoindentation and electron microscopy, and the behavior compared with the low strength (65MPa)-good ductility (15%) alloy without LPSO structure. In non-LPSO alloy, basal < a > slip mainly occurred, while in LPSO-containing alloy, the LPSO changed the deformation mechanism to extensive non-basal < c +a > slip and deformation twinning. The intrinsic good plasticity of LPSO and its impact on the deformation mechanism of Mg matrix contributed to superior mechanical properties and nanoscale deformation behavior of Mg-rare earth alloys, without compromising the ductility.