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Chin. Opt. Lett.
 Home  List of Issues    Issue 01 , Vol. 05 , 2007    Direct manufacturing of Cu-based alloy parts by selective laser melting


Direct manufacturing of Cu-based alloy parts by selective laser melting
Weihui Wu, Yongqiang Yang, Yanlu Huang
College of Mechanical Engineering, [South China University of Technology], Guangzhou 510640

Chin. Opt. Lett., 2007, 05(01): pp.37-40-4

DOI:
Topic:Lasers and laser optics
Keywords(OCIS Code): 140.3390  310.3840  310.1860  

Abstract
The frequent defects of the metal parts, such as non-fully melting, thermal strain, and balling, which are produced by selective laser melting (SLM) that is a novel method of one-step manufacturing, are analyzed theoretically and experimentally. The processing parameters significantly affect the quality of the final parts, and simultaneously, the appropriate laser mode and the special scanning strategy assure a satisfying quality of the final parts. The SLM experiment is carried out using Cu-based powder. The metal part is divided into several scanned regions, each of which is scanned twice at the cross direction with different scanning speeds. The microstructure is analyzed on microscope. The results show that the part is metallurgically bonded entity with a relative density of 95%, and the microstructure is composed of equiaxial crystal and dendritic crystal whose distributions are mainly decided by the scanning strategy.

Copyright: © 2003-2012 . This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Received:2006/8/9
Accepted:
Posted online:

Get Citation: Weihui Wu, Yongqiang Yang, Yanlu Huang, "Direct manufacturing of Cu-based alloy parts by selective laser melting," Chin. Opt. Lett. 05(01), 37-40-4(2007)

Note: W. Wu's e-mail address is wuweihui_068@163.com.



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