Study on shrinkage behaviour of direct laser sintering metallic powder

被引：79

作者：

Zhu, H. H.

Lu, L.

Fuh, J. Y. H.

机构：

[1] Huazhong Univ Sci & Technol, State Key Lab Laser Technol, Wuhan 430074, Peoples R China

[2] Natl Univ Singapore, Dept Mech Engn, Singapore 117548, Singapore

来源：

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE | 2006年 / 220卷 / 02期

关键词：

direct laser sintering; metallic powder; shrinkage behaviour; anisotropy;

D O I：

10.1243/095440505X32995

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The shrinkage behaviour caused in the direct laser sintering of Cu-based metal powder has been investigated. Shrinkages were observed to be anisotropic and the largest was found in the z (height) direction. The in-plane (x, y) dimensional changes are caused by a combination of three sources: thermal shrinkage, sintering shrinkage, and expansion arising because the metal particles fall during the sintering. A hypothetical two-dimensional model is proposed to explain the expansion phenomenon and the particle size ratio based on this model is also deduced. The experimental results agree well with the hypothesis.

引用

页码：183 / 190

页数：8

共 13 条

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[3]

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[4]

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