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Title: Laser surfacing of AISI 316 stainless steel using NiTiCu for enhancing cavitation erosion resistance
Authors: Cheng, FT
Lo, KH
Man, HC 
Keywords: AISI 316
Cavitation erosion
Laser surfacing
NiTi alloys
Issue Date: 2003
Source: ICALEO 2003 - 22nd International Congress on Applications of Laser and Electro-Optics, Congress Proceedings, 2003, P515 How to cite?
Abstract: Laser surfacing of AISI 316 stainless steel was achieved by a two-step process. NiTiCu powder of particle size about 70 μm was preplaced on steel samples and scanned by a high-power CW Nd:YAG laser to form a modified layer of a few hundred μm thick. The microstructure of the laser-modified layer and the morphology of the damaged surface after cavitation were studied by optical microscopy. The phases present were analyzed by X-ray diffractometry (XRD). The cavitation erosion behavior in 3.5% NaCl solution was studied using an ultrasonic vibratory facility. Using appropriate processing parameters, the cavitation erosion resistance of the laser-treated sample was increased by more than 10 times compared with the substrate, though some defects were present. The improvement in erosion resistance was explained in terms of the phases formed in the modified layer.
Description: ICALEO 2003 - 22nd International Congress on Applications of Laser and Electro-Optics, Jacksonville, FL, 13-16 October 2003
ISBN: 0912035757
Appears in Collections:Conference Paper

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