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.
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1st Pacific International Conference on Laser Materials Processing, Micro, Nano and Ultrafast Fabrication
April 19–21, 2004
Melbourne, Australia
ISBN:
978-0-912035-76-5
PROCEEDINGS PAPER
Laser cladding of NiTi wire on AISI 316 stainless steel
F. T. Cheng;
F. T. Cheng
1
a
Department of Applied Physics, The Hong Kong Polytechnic University
, Hung Hom, Kowloon, Hong Kong, China
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K. H. Lo;
K. H. Lo
a
Department of Applied Physics, The Hong Kong Polytechnic University
, Hung Hom, Kowloon, Hong Kong, China
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H. C. Man
H. C. Man
b
Department Industrial and Systems Engineering, The Hong Kong Polytechnic University
, Hung Hom, Kowloon, Hong Kong, China
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Published Online:
April 01 2004
Citation
F. T. Cheng, K. H. Lo, H. C. Man; April 19–21, 2004. "Laser cladding of NiTi wire on AISI 316 stainless steel." Proceedings of the 1st Pacific International Conference on Laser Materials Processing, Micro, Nano and Ultrafast Fabrication. PICALO 2004: 1st Pacific International Conference on Laser Materials Processing, Micro, Nano and Ultrafast Fabrication. Melbourne, Australia. (pp. 305). ASME. https://doi.org/10.2351/1.5056093
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