Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/30911
Title: A preliminary study of laser cladding of AISI 316 stainless steel using preplaced NiTi wire
Authors: Cheng, FT
Lo, KH
Man, HC 
Keywords: AISI 316 stainless steel
Laser cladding
Nanoindentation
NiTi
Preplaced wire
Issue Date: 2004
Publisher: Elsevier
Source: Materials science and engineering. A, Structural materials : properties, microstructure and processing, 2004, v. 380, no. 1, p. 20-29 How to cite?
Journal: Materials science and engineering. A, Structural materials : properties, microstructure and processing 
Abstract: NiTi wire of diameter 1 mm was preplaced on AISI 316 stainless steel samples by using a binder. Melting of the NiTi wire to form a clad track on the steel substrate was achieved by means of a high-power CW Nd:YAG laser using different processing parameters. The geometry and microstructure of the clad deposit were studied by optical microscopy and scanning electron microscopy (SEM), respectively. The hardness and compositional profiles along the depth of the deposit were acquired by microhardness testing and energy-dispersive spectroscopy (EDS), respectively. The elastic behavior of the deposit was analyzed using nanoindentation, and compared with that of the NiTi wire. The dilution of the NiTi clad by the substrate material beneath was substantial in single clad tracks, but could be successively reduced in multiple clad layers. A strong fusion bonding with tough interface could be obtained as evidenced by the integrity of Vickers indentations in the interfacial region. In comparison with the NiTi cladding on AISI 316 using the tungsten inert gas (TIG) process, the laser process was capable of producing a much less defective cladding with a more homogeneous microstructure, which is an essential cladding quality with respect to cavitation erosion and corrosion resistance. Thus, the present preliminary study shows that laser cladding using preplaced wire is a feasible method to obtain a thick and homogeneous NiTi-based alloy layer on AISI 316 stainless steel substrate.
URI: http://hdl.handle.net/10397/30911
ISSN: 0921-5093
EISSN: 1873-4936
DOI: 10.1016/j.msea.2004.01.056
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

31
Last Week
0
Last month
0
Citations as of Aug 15, 2017

WEB OF SCIENCETM
Citations

24
Last Week
0
Last month
0
Citations as of Aug 12, 2017

Page view(s)

31
Last Week
2
Last month
Checked on Aug 13, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.