引用本文:陈希章,胡科,徐淑文.等离子喷焊低温马氏体相变合金粉末的组织与性能[J].中国表面工程,2017,30(6):132~139
CHEN Xi-zhang,HU Ke,XU Shu-wen.Microstructure and Properties of Low Temperature Martensitic Transformation Alloy Powder by Plasma Surfacing[J].China Surface Engineering,2017,30(6):132~139
【打印本页】   【HTML】   【下载PDF全文】   【查看/发表评论】  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被：浏览 2824次   下载 1850次 本文二维码信息
码上扫一扫！
分享到： 微信 更多
字体:加大+|默认|缩小-
等离子喷焊低温马氏体相变合金粉末的组织与性能
陈希章1, 胡科2, 徐淑文1
1.温州大学 机电工程学院,浙江 温州 325035;2.江苏大学 材料科学与工程学院,江苏 镇江 212013
摘要:
为减小喷焊过程中热收缩形成的拉伸应力，采用等离子喷焊的方法，在Q235钢基体上进行堆焊，制备出具有残余压缩应力的低温马氏体相变合金耐磨复合涂层。利用金相显微镜（OM）、SEM、EDS、XRD、X射线残余应力测试仪、显微硬度仪和摩擦磨损试验机等，对喷焊层金属的微观组织、成分和力学性能进行了分析和研究。结果表明：合适的工艺参数下，能够得到与基体呈冶金结合的无缺陷喷焊层组织；喷焊层的组织主要为马氏体和少量残余奥氏体组成；喷焊层获得较为理想的残余压缩应力，最大残余压缩应力可达到-351.2 MPa，平均残余奥氏体的质量分数约为10.18%；和基体材料相比较，等离子喷焊层的硬度提高2.5倍，耐磨性提高47.22倍。
关键词:  等离子喷焊  低温马氏体相变  残余应力  残余奥氏体  耐磨性
DOI：10.11933/j.issn.1007-9289.20170619002
分类号:
基金项目:国家自然科学基金（51575401）；浙江省自然科学基金（LY16E050007）
Microstructure and Properties of Low Temperature Martensitic Transformation Alloy Powder by Plasma Surfacing
CHEN Xi-zhang1, HU Ke2, XU Shu-wen1
1.College of Mechanical and Electrical Engineering, Wenzhou University, Wenzhou 325035, Zhejiang;2.School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu
Abstract:
In order to reduce the tensile residual stress result from thermal contraction during plasma surfacing, the low temperature martensitic transformation alloy wear resistant composite coating with residual compressive stress was prepared by plasma spraying in situ reaction on Q235 steel substrate. Microstructure, composition and mechanical properties of the spray surfacing layer were analyzed by optical microscope (OM), SEM, EDS, XRD, X-ray analysis of residual stress tester, micro hardness tester and friction wear tester. Results show that the structure without defect and metallurgically bonding to the matrix can be obtained by the proper process parameters. The structure of the spray surfacing layer is mainly composed of martensite and a small amount of retained austenite. The ideal residual compressive stress is obtained in the spray surfacing layer. The maximum residual compressive stress can reach -351.2 MPa and the average residual austenite content is about 10.18%. Compared with the base material, the hardness of the plasma spraying layer increases by 2.5 times, and the abrasion resistance increase by 47.22 times.
Key words:  plasma surfacing  low temperature martensitic transformation  residual stress  retained austenite  wear resistance
手机扫一扫看