文献类型：期刊文章

作　　者：熊拥军[1] 邱子力[1] 李瑞迪[1,2] 袁铁锤[1] 吴宏[1] 刘锦辉[3]

机构地区：[1]中南大学粉末冶金国家重点实验室,长沙410083 [2]华中科技大学材料成形与模具技术国家重点实验室,武汉430074 [3]黑龙江科技大学现代制造工程中心,哈尔滨150027

出　　处：《Transactions of Nonferrous Metals Society of China》

基　　金：Projects(51571214,51301205,51101126)supported by the National Natural Science Foundation of China;Project(P2014-07)supported by the Open Fund of State Key Laboratory of Materials Processing and Die&Mould Technology,China;Project(20130162120001)supported by the Specialized Research Fund for the Doctoral Program of Higher Education of China;Project(K1308034-11)supported by the Changsha Municipal Science and Technology Plan,China;Projects(2015GK3004,2015JC3006)supported by the Science and Technology Project of Hunan Province,China;Project supported by the Innovation-driven Plan in Central South University,China;Project supported by the Independent Project of State Key Laboratory of Powder Metallurgy of Central South University,China

年　　份：2015

卷　　号：25

期　　号：11

起止页码：3685-3693

语　　种：中文

收录情况：AJ、CAS、CSA、CSA-PROQEUST、CSCD、CSCD2015_2016、EBSCO、EI、IC、INSPEC、JST、SCIE、SCOPUS、WOS、ZGKJHX、普通刊

摘　　要：The ultra-fine structured Ni?Al?WC layer with interlocking bonding was fabricated on austenitic stainless steel by combination of laser clad and friction stir processing (FSP). Laser was initially applied to Ni?Al elemental powder preplaced on the austenitic stainless steel substrate to produce a coating for further processing. The as-received coating was subjected to FSP treatment, processed by a rotary tool rod made of WC?Co alloy, to obtain sample for inspection. Microstructure, phase constitutions, hardness and wear property were investigated by methods of scanning electronic microscopy (SEM) with energy-dispersive X-ray spectroscopy (EDX) microanalysis, and X-ray diffraction (XRD), hardness test alongside with dry sliding wear test. The results show that the severe deformation effect exerted on the specimen resulted in an ultra-fine grain layer of about 100μmin thickness and grain size of 1?2μm. Synergy between introduction of WC particles to the deformation layer and deformation strengthening contributes greatly to the increase in hardness and friction resistance. An interlocking bonding between the coating and matrix which significantly improves bonding strength was formed due to the severe deformation effect.

关 键 词：laser clad  friction stir processing  Ni-Al-WC coating  ultra-fine grain  interlocking bonding  

分 类 号：TG174.4]