学位：博士
职称：教授
所在单位：材料科学与工程学院
长期从事金属材料蠕变、组织演化、损伤及寿命预测工作。主持和参加国家自然科学基金重点和面上项目6项，“863”计划课题2项，省部级及企业项目20余项。获国家发明专利5项，发表学术论文200余篇。出版专著“耐热钢持久性能的统计分析及可靠性预测”1部（科学出版社），译著“高温合金”1部，编著1部。获辽宁省教学名师，宝钢教育奖优秀教师奖。辽宁省教学成果一等奖1项，国家本科一流课程、国家精品在线开放课程负责人。Emerald出版社颁发的学术奖“Literati Club Awards for Excellence”，金属学报2009-2015年度优秀论文奖。省部级科技奖励一等奖、二等奖5项。
Numerical and experimental investigation on effect of impact velocity on particle deposition characteristics in cold spraying
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论文类型：期刊论文
发表时间：2011-09-01
发表刊物：MATERIALS RESEARCH INNOVATIONS
收录刊物：Scopus、SCIE、EI
卷号：15
期号：4
页面范围：283-289
ISSN号：1432-8917
关键字：Cold gas dynamic spraying; Deposition characteristic; Finite element modelling; 304 stainless steel particle
摘要：This work aims to study the bonding features and mechanisms present in cold spray coatings of 304 stainless steel by linking experimental investigations with finite element modelling for the purpose of optimising the deposition process. Experimental investigations show that successful bonding is achieved only above a critical particle velocity, which could be measured by experimental methods. The numerical predicted results reveal that deformation features and interface mechanical property of deposited particles adequately explain the deposition characteristics for different impact conditions. The particle bonding mechanism can be attributed to the adiabatic shear instabilities that are caused by slide friction and compression force. Experimental and numerical results also illustrated that both particle flatten ratio and impact crater increased with increasing impacted velocity. On the basis of these results, an optimised spray parameter is essential for the coating application.
发表时间：2011-09-01
