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个人信息Personal Information
教授
博士生导师
硕士生导师
任职 : 中国体视学会材料科学分会理事；中国体视学会金相分会理事
性别：男
毕业院校：东北大学
学位：博士
所在单位：材料科学与工程学院
学科：材料学
办公地点：新三束实验室（4号楼）305
联系方式：13390512391
电子邮箱：wynmm@dlut.edu.cn
Quantitative analysis on friction stress of hot-extruded AZ31 magnesium alloy at room temperature
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论文类型：期刊论文
发表时间：2018-10-01
发表刊物：JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
收录刊物：SCIE
卷号：34
期号：10
页面范围：1765-1772
ISSN号：1005-0302
关键字：Mg alloy AZ31; Hot extrusion; Basal-fiber texture; Hall-Petch relation
摘要：Mg alloy AZ31 with similar to 79% (volume fraction of scattering less than 30 degrees) basal-fiber texture through hot extrusion exhibits strong grain-size dependent yield strength. Samples with grain sizes varying from 4.5 to 22.3 mu m were obtained by altering annealing time durations. The Hall-Petch relations of tension and compression are sigma(0.2) = 86+200d(-1/2) and sigma(0.2) =17 +327d(-1/2), respectively. Considering the correlation between grain orientation and deformation modes, a novel weighted average method of calculating friction stress cro was proposed, and results of calculation agreed with the experimental ones, which can reasonably understand the yielding behavior in tension and compression. (C) 2018 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.