Microstructure and properties of thin wall by laser cladding forming

被引：46

作者：

Huang, Fengxiao ^{[1
,2
]}

Jiang, Zhonghao ^{[1
]}

Liu, Ximing ^{[3
]}

Lian, Jianshe ^{[1
]}

Chen, Li ^{[3
]}

机构：

[1] Jilin Univ, Coll Mat Sci & Engn, Minist Educ, Key Lab Automobile Mat, Changchun 130025, Peoples R China

[2] Aviat Univ AF, Dept Engn Mech, Changchun 130022, Peoples R China

[3] Changchun Univ Technol, Sch Mat Sci & Engn, Changchun 130012, Peoples R China

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2009年 / 209卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Laser cladding forming; Ni-based WC; Thin wall parts; Microstructure; Microhardness; COATINGS; WEAR;

D O I：

10.1016/j.jmatprotec.2009.01.019

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Laser cladding forming is a layer additive manufacturing technique and can be used to fabricate three-dimensional fully dense metal components directly from the CAD model with neither mould nor tool. It has shown extensive application on many fields and has been intensively developed. An investigation of laser cladding forming for Ni-based tungsten carbides (WC) thin wall is presented in this paper. The phase constitution, microstructure and microhardness were investigated by X-ray diffractometer, energy dispersion spectroscopy, scanning electron microscope and Vickers hardness tester. The characteristics of the thin wall were studied also. The results showed that the undissolved tungsten carbides uniformly dispersed in the matrix of the Ni-based alloy. A preferable bonding mode between WC particle and nickel-based alloy matrix was observed in the thin wall. The Vickers hardness across the longitudinal section of the sample in the height-direction shows a periodical fluctuation due to the secondary heating. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：4970 / 4976

页数：7

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