Improving wear and corrosion resistance of U71Mn rail steel subjected to laser in-situ fabrication of Fe based Cr -V coatings

被引：6
作者：
Yang, Yuling [1 ]
Xin, Yingxin [1 ]
Chen, Hongnan [1 ]
Liu, Zhenyu [1 ]
Wang, Bo [2 ]
Qiao, Hongchao [3 ]
Zhang, Erlin [4 ,5 ]
机构：
[1] Northeastern Univ, Sch Sci, Shenyang, Peoples R China
[2] Off Liaoning Higher & Secondary Educ Enrollment Ex, Beijing, Peoples R China
[3] Chinese Acad Sci, Shenyang Inst Automat, Shenyang, Peoples R China
[4] Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat ATM, Educ Minist China, Shenyang, Peoples R China
[5] Northeastern Univ, Res Ctr Met Wires, Shenyang, Peoples R China
来源：
WEAR | 2024年 / 546卷
关键词：
Laser cladding; Railroad switch; Fe basedCr-V coating; Microstructure; Wear resistance; FATIGUE BEHAVIOR; GRAIN-REFINEMENT; CONTACT FATIGUE; CAST-IRON; MICROSTRUCTURE; ALLOY; PERFORMANCE; COMPOSITE; CHROMIUM; VANADIUM;
D O I：
10.1016/j.wear.2024.205312
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
With purpose of improving wear and corrosion resistance of U71Mn railroad switch, Fe based Cr - V coating was designed and in -situ fabricated on the surface of U71Mn rail steel using laser alloying technology. The phase constituents, effect of V content on the grain size, the microstructure, wear and corrosion resistance were investigated. Grain size refinement effect was observed due to more content of V content in the raw powder. The microhardness and wear resistance of the obtained Fe based Cr - V coatings presented a positive correlation with the content of V addition. The coating with more content of V addition presented a nobler E corr and a lower passivation current density i corr , indicating a more excellent corrosion resistance performance.
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页数：9
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