邓德伟,刘海英,张林,孙奇,杨树华,宋茂付,郑海彤,张敏

• 1:大连理工大学材料科学与工程学院
• 2:沈阳鼓风机集团股份有限公司研究院
• 3:辽宁省凝固控制与数字化制备技术重点实验室

摘要(Abstract)：

利用等离子堆焊技术在304L不锈钢表面堆焊Fe90自熔性合金粉末。采用OM、XRD和TEM对堆焊层组织进行分析,用硬度计、环-块式摩擦磨损试验机和饱和甘汞电极对堆焊层的硬度、耐磨性和耐蚀性进行测试,研究焊接电流对堆焊层组织和性能的影响规律和作用机理。结果表明:Fe90堆焊层组织由马氏体,(Cr,Fe)_7C_3,CrFeB,CrB与Fe_3Si组成,硬度是基材的3.5~5.2倍,磨损量下降80%~85%,耐蚀性基本不变;堆焊电流为130 A时,堆焊层的硬度最高,耐磨性最佳。

关键词(KeyWords)： 等离子堆焊;Fe90合金粉末;显微组织;硬度;耐磨性;耐蚀性

Abstract:

Keywords:

基金项目(Foundation): 国家“973”项目(2011CB013402);; 辽宁省自然科学基金(2014028002);; 辽宁省科技创新重大专项(201303002);; 辽宁重大装备制造协同创新中心;; 沈鼓-大工重大科研发展基金;; 中央高校基本科研业务费专项资金资助项目

作者(Author): 邓德伟,刘海英,张林,孙奇,杨树华,宋茂付,郑海彤,张敏

DOI: 10.13289/j.issn.1009-6264.2016-X326

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