MICROSTRUCTURE AND PROPERTIES OF A TITANIUM CARBIDE REINFORCED COATING ON GREY IRON APPLIED WITH LASER CLADDING

被引：5
作者：
Ding, Jieqiong [1 ]
Liu, Yanhui [1 ]
Zhu, Lingjie [1 ]
Zhou, Lei [1 ]
Li, Yongjiu [1 ]
机构：
[1] Shanghai Univ Engn Sci, Sch Mat Engn, 333 Longteng Rd, Shanghai 201620, Peoples R China
来源：
MATERIALI IN TEHNOLOGIJE | 2019年 / 53卷 / 03期
关键词：
laser cladding; grey cast iron; TiC; wear resistance; coating; SITU; EVOLUTION; WEAR;
D O I：
10.17222/mit.2018.206
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A titanium carbide (TiC) reinforced Fe-based composite coating was prepared with laser cladding using titanium powder as the added material on grey cast iron. The macroscopic morphology and microstructure of the coating were analyzed; the hardness and wear resistance of the coating were investigated. The results show that a good coating was produced, without any cracks and porosity. The graphite phase disappeared and the TiC phase appeared in the coating after the laser-cladding process. A static melting zone without TiC and graphite appeared between the cladding zone and the substrate. With the formation of fine TiC particles, the average microhardness of the coating rose up by more than 3 times compared to the substrate material, and the coating exhibited good wear resistance.
引用
收藏
页码：377 / 381
页数：5
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