Laser surface alloying of Ni-plated steel with CO2 laser

被引：5
|
作者：
Hussain, A. [1 ]
Ahmad, I. [1 ]
Hamdani, A. H. [1 ]
Nussair, A. [1 ]
Shahdin, S. [1 ]
机构：
[1] Pakistan Inst Lasers & Opt, Rawalpindi, Pakistan
来源：
APPLIED SURFACE SCIENCE | 2007年 / 253卷 / 11期
关键词：
laser; surface melting; microstructure; martensite transformation; binary alloy Fe-Ni; solidification rate;
D O I：
10.1016/j.apsusc.2006.10.067
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：
Laser surface alloying of low carbon steel electroplated with thin (10 mu m) Ni using an 850 W CW CO2 laser is reported for the first time. Fe-Ni binary alloys of different concentrations are formed by varying laser traverse speed from 0.5 to 5 m/min. The phase transformation from alpha to alpha + gamma is discussed as a function of Ni contents. Development of microstructure in the modified zone is analysed in terms of solidification rate and Ni concentration. A three-fold increase in the microhardness of the binary alloy is observed. Formation of homogenous, adherent and crack free surface alloys is reported. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：4947 / 4950
页数：4
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