Cavitation erosion behavior of laser-clad Ni-Cr-Fe-WC on brass

K. F. Tam, F. T. Cheng, Hau Chung Man

Research output: Journal article publicationJournal articleAcademic researchpeer-review

33 Citations (Scopus)

Abstract

Laser surface modification of brass with an alloy-ceramic composite powder Ni-Cr-Fe-WC was studied using a two-step process, with powder preplacement followed by laser irradiation. For preplaced coatings of a few 100 μm thick, successfully cladding/alloying was achieved at a laser (CW Nd:YAG) energy density in the range 60-100 J/mm2. Under proper processing conditions, the cavitation erosion resistance was increased by a factor of 9.1. This large increase was attributed to the formation of a Ni-rich matrix reinforced by precipitated carbides and tightly bound WC particles.
Original languageEnglish
Pages (from-to)1341-1351
Number of pages11
JournalMaterials Research Bulletin
Volume37
Issue number7
DOIs
Publication statusPublished - 1 Jun 2002

Keywords

  • A. Alloy
  • B. Laser deposition
  • C. Electron microscopy
  • D. Mechanical properties
  • D. Microstructure

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this