Laser & Optoelectronics Progress, Volume. 49, Issue 4, 41403(2012)
Effect of Laser Remelting on Microstructure and Properties of In-Situ Coating by Laser Cladding on TC4 Titanium Alloy
In order to improve the in-situ synthesized coating quality by laser cladding, in-situ laser cladding coating on TC4 titanium alloy surface is processed by laser remelting. Microstructure, phase, and microhardness of the coatings are studied by scanning electron microscope (SEM), X-ray diffractometer (XRD) and micro-hardness tester. The results show that the pore of in-situ coating bottom is eliminated and the ceramic phase of coating is distributed homogeneously by laser remelting so that microstructure becomes denser. After laser remelting, the microhardness gradient is reduced. The average microhardness and coating quality are enhanced by laser remelting.
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Lin Yinghua, Li Yuehua, Chen Zhiyong, Zhu Weihua, Wen Xiangdong, Wang Xinlin. Effect of Laser Remelting on Microstructure and Properties of In-Situ Coating by Laser Cladding on TC4 Titanium Alloy[J]. Laser & Optoelectronics Progress, 2012, 49(4): 41403
Category: Lasers and Laser Optics
Received: Dec. 6, 2011
Accepted: --
Published Online: Mar. 1, 2012
The Author Email: Yinghua Lin (lyh351258@163.com)