Study on Fe-Al-Si in situ composite coating fabricated by laser cladding

被引：38

作者：

Zhao, Long-zhi ^{[1
]}

Zhao, Ming-Juan ^{[1
]}

Li, De-Ying ^{[1
]}

Zhang, Jian ^{[1
]}

Xiong, Guang-Yao ^{[1
]}

机构：

[1] E China Jiaotong Univ, Key Lab, Minist Educ Conveyance & Equipment, Nanchang 330013, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2012年 / 258卷 / 08期

关键词：

Laser cladding; Fe-Al-Si in situ composite coating; Microhardness; Wear resistance; PLASMA ELECTROLYTIC OXIDATION; STEEL;

D O I：

10.1016/j.apsusc.2011.09.057

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Fe-Al-Si in situ composite coating was fabricated on the surface of ASTM A283Gr. D steel by laser cladding with the preplaced powder. The influence of powder composition, laser power and scanning speed on microstructure, microhardness and wear resistance were investigated in this paper. The results show that Fe-Al-Si in situ composite coating with the good metallurgical bond mainly consists of Fe, SiO2 and Al2Fe3Si4 intermetallic compound. With the increase of laser power and scanning speed, the grain size of coating gets the minimum value. With the increase of laser power and scanning speed, microhardness and wear resistance both get the peak vaule, and their value are three times and 3.5 times those of substrate, respectively. The optimum parameters are followed as: the ratio of the preplaced composite powder: 8:1:1, laser power: 1600 W and scanning speed: 400 mm/min. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：3368 / 3372

页数：5

共 15 条

[1] Sliding wear behaviour of laser clad coatings based upon a nickel-based self-fluxing alloy co-deposited with conventional and nanostructured tungsten carbide-cobalt hardmetals [J].