Laser cladding of NiTi wire on AISI 316 stainless steel

F. T. Cheng, K. H. Lo, Hau Chung Man

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

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.
Original languageEnglish
Title of host publicationPICALO 2004 - 1st Pacific International Conference on Applications of Laser and Optics, Conference Proceedings
Pages24-27
Number of pages4
Publication statusPublished - 1 Dec 2004
EventPICALO 2004 - 1st Pacific International Conference on Applications of Laser and Optics - Melbourne, VIC, Australia
Duration: 19 Apr 200421 Apr 2004

Conference

ConferencePICALO 2004 - 1st Pacific International Conference on Applications of Laser and Optics
CountryAustralia
CityMelbourne, VIC
Period19/04/0421/04/04

Keywords

  • AISI stainless steel
  • Elastic properties
  • Hardness
  • Interface
  • Laser cladding
  • NiTi

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Electrical and Electronic Engineering

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