姚正军

个人信息Personal Information

教授 博士生导师

招生学科专业:
化学 -- 【招收硕士研究生】 -- 材料科学与技术学院
材料科学与工程 -- 【招收博士、硕士研究生】 -- 材料科学与技术学院
机械 -- 【招收博士、硕士研究生】 -- 材料科学与技术学院
材料与化工 -- 【招收博士、硕士研究生】 -- 材料科学与技术学院

主要任职:面向苛刻环境的材料制备与防护技术工业和信息化部重点实验室主任

其他任职:江苏省金属学会副理事长,江苏省热处理及表面改性工程技术研究中心副主任,江苏省机械工程学会材料工程专业委员会副理事长,江苏省复合材料学会常务理事

毕业院校:南京航空航天大学

学历:南京航空航天大学

学位:工学博士学位

所在单位:材料科学与技术学院

办公地点:江宁校区东区D10-材料楼A511

联系方式:13951818597

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Correlation Between Heat-Treated Microstructure and Mechanical and Fretting Wear Behavior of Electron Beam Freeform-Fabricated Ti6Al4V Alloy

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所属单位:材料科学与技术学院

发表刊物:JOM

摘要:Heat treatments have been conducted on electron beam freeform-fabricated (EBF3-ed) Ti6Al4V alloy to obtain desired compressive and antifretting wear performance. The results suggested that the compression and fretting wear properties were significantly affected by the heat-treated microstructure. The subtransus heat treatment used in the present work created a homogeneous and coarser α + β lamellar structure with numerous fine secondary α and nanoscale dispersoids inside. Such structural evolution accounts for the superior compressive property, high hardness, and fretting wear resistance. Additional findings revealed that the fine secondary α and nanoscale dispersoids made a great contribution to the mechanical strengthening and especially passivation of crack propagation. This study shows that the as-received microstructure after EBF3 can be tailored by heat treatment to achieve favorable performance, which is significant for application of Ti6Al4V deposits. © 2019, The Minerals, Metals & Materials Society.

ISSN号:1047-4838

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发表时间:2019-07-15

合写作者:Tao, Xuewei,张莎莎,Li, Zhong,李忠,Xu, Yi

通讯作者:Tao, Xuewei,姚正军