Effect of Co on microstructure and interfacial properties of Fe-based laser cladding

被引：0
|
作者：
Li-li Gao
Xiu-fang Bian
Yong-sheng Tian
Chun-xia Fu
机构：
[1] Shandong University,Key Laboratory of Liquid Structure and Heredity of Materials of Ministry of Education
来源：
Journal of Iron and Steel Research International | 2009年 / 16卷
关键词：
laser cladding; microstructure; microhardness; bond strength; fracture;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The coatings consisting of Fe0.64 Ni0.36 dendrites as matrix and (Fe,Cr)7 (C,B)3 interdendritic compounds as reinforcement were fabricated on the medium steel substrate by laser cladding using the Fe-based powders with different Co content, and Co is uniformly dissolved in the coatings. Compared with the coatings containing 1% and 5% Co, the coating containing 3% Co increases in the area fraction of the interdendritic region by about 5% , in the microhardness nearby the interface by about HV 55 and in the interfacial bond strength by about 30 MPa. The interface fracture morphology exhibits the tear appearance, which can be characterized as the ductile fracture.
引用
收藏
页码：84 / 88
页数：4
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