Investigation on Microstructure and Dry Sliding Wear Behavior of a Novel Fe-Cr-B-C-Al-Si-Mn Composite Coatings on 2Cr13 Steel by Laser Cladding

被引：4
|
作者：
Gu, Jian [1 ]
Li, Dongqing [1 ]
Liu, Shengchun [1 ]
Si, Jiajun [1 ]
Cai, Songlin [1 ]
Liu, Xuliang [1 ]
Liu, Peng [1 ]
Wang, Kaiming [2 ,3 ]
机构：
[1] China Elect Power Res Inst, Beijing 102401, Peoples R China
[2] Changsha Univ Sci & Technol, Coll Automobile & Mech Engn, Hunan Prov Key Lab Intelligent Mfg Technol High P, Gong1 B415 960,Sect 2,Wanjiali South Rd, Changsha 410114, Hunan, Peoples R China
[3] Tsinghua Univ, Dept Mech Engn, State Key Lab Tribol, Beijing 100084, Peoples R China
来源：
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2022年 / 31卷 / 03期
基金：
英国科研创新办公室;
关键词：
Fe-based composite coatings; laser cladding; microstructure; TEM; wear resistance; MECHANICAL-PROPERTIES; ROLLING TEMPERATURE; ALLOY; RESISTANCE; NB;
D O I：
10.1007/s11665-021-06325-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A novel Fe-Cr-B-C-Al-Si-Mn composite coating was designed and synthesized on 2Cr13 steel substrate using laser cladding technique in this study. The microstructure evolution, microhardness and wear resistance of the composite coating were investigated. The results showed that the microstructure of the coating was mainly composed of alpha-(Fe,Cr,Al) martensite, retained gamma-Fe, and the eutectic comprised of CrFeB, M-3(C,B)(2), M-2(B,C) and M-23(C,B)(6). The average microhardness of the coating (742.1 HV0.5) was 3.95 times compared with the 2Cr13 steel substrate, and the wear resistance was enhanced by 12.5 times compared with the 2Cr13 steel substrate. The wear mechanisms were dominated by abrasive wear and oxidative wear.
引用
收藏
页码：2381 / 2390
页数：10
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