Experimental research on formation of laser sintering WC particles reinforced Ni-base alloy bulk

被引：1
|
作者：
Chen J. [1 ]
机构：
[1] College of Mechanical Engineering, Huaihai Institute of Technology, Lianyungang
来源：
Zhongguo Jiguang/Chinese Journal of Lasers | 2010年 / 37卷 / 03期
关键词：
Formation; Laser sintering; Laser technique; Ni-base alloy; WC particles;
D O I：
10.3788/CJL20103703.0868
中图分类号：
学科分类号：
摘要：
Theory of preparation of sub-micro WC particles reinforced Ni-base super alloy matrix composite using direct metal laser sintering (DMLS) is introduced. The effects of processing parameters , such as laser power, scanning speed on the microstructures, composition and microhardness of the laser sintered samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM ) and microhardness tester. The result shows that the examples prepared by laser sintering have better performance and higher density under the laser power of 900 W, scanning speed of 0.7 m/min, for WC particles melt as dendrites disperse evenly in the matrix and can be captured by solid-liquid interface. The compact metal bulks with high hardness are fabricated successfully by DMLS with optimized processing parameters.
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页码：868 / 872
页数：4
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