Effect of re-scanning on tribological characterization of laser surface alloyed layers

S. A. Vaziri, H. R. Shahverdi, S. G. Shabestari, K. Hazeli, M. J. Torkamany

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Laser surface alloying (LSA) is increasingly recognized as a powerful surface modification tool for enhancing the wear resistance of engineering components. Experimental investigations have been carried out to examine the influence of re-scanning on tribological behavior in laser surface alloying of Al with Ni. Dry sliding wear tests have been conducted using a reciprocating machine under different normal loads of 10,. 15, and 20. N and at a constant sliding speed of 0.1m/s. Re-scanning was found to substantially affect the laser-alloyed layer, including its phase constitution. Re-scanning leads to higher hardness compared to a single-time scan; however, the specific wear rate following re-scanning is lower. These observations are rationalized in terms of microstructure and the wear mechanism.

Original languageEnglish (US)
Pages (from-to)3875-3879
Number of pages5
JournalMaterials and Design
Volume31
Issue number8
DOIs
StatePublished - Sep 2010
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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