Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/33321
Title: Laser cladding of NiTi wire on AISI 316 stainless steel
Authors: Cheng, FT
Lo, KH
Man, HC 
Keywords: AISI stainless steel
Elastic properties
Hardness
Interface
Laser cladding
NiTi
Issue Date: 2004
Source: PICALO 2004 - 1st Pacific International Conference on Applications of Laser and Optics, Conference Proceedings, 2004, p. 24-27 How to cite?
Abstract: Nickel titanium (NiTi) wire was clad on AISI 316 stainless steel using a high-power CW Nd:YAG laser under various processing parameters. The effect of the laser parameters on the morphology of the melt pool and the hardness of the clad were studied using SEM and Vickers microhardness measurement. The dilution of the clad due to mixing with substrate and the phases formed were determined by EDS and XRD analysis, respectively. The elastic behavior of the clad was investigated by nanoindentation and compared with that of NiTi wire. With proper laser processing parameters, good fusion bonding was observed. However, a dilution ratio of more than 10 % was common in the clad. The hardness was increased from 400 HV for the NiTi wire to more than 800 HV for the clad, but was accompanied with some degradation in superelasticity. The present study indicates feasibility of cladding NiTi wire on AISI 316 stainless steel, though the achievement of a lower dilution ratio requires further work.
Description: PICALO 2004 - 1st Pacific International Conference on Applications of Laser and Optics, Melbourne, VIC, 19-21 April 2004
URI: http://hdl.handle.net/10397/33321
ISBN: 0912035765
9780912035765
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