High-temperature stability of self-lubricating wear resistant coating on Ti-6Al-4V alloy prepared by laser cladding

Jian Luo, Xiu Bo Liu*, Xiao Long Lu, Peng Cheng Yu, Yao Chen, Gao Lian Shi, Shao Hua Wu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The high-temperature self-lubricating wear resistant composite coatings reinforced with γ-NiCrAlTi/TiC/CaF2 were fabricated by laser cladding. High-temperature phase stability of the coatings after heating at 600℃ for 24, 48, 96 h was studied. The phase composition, cross-sectional microstructure, microhardness, friction and wear behavior and worn surface morphology of the composite coatings were evaluated, respectively. The results show that the phase composition in the coatings changes a little. The volume fraction of eutectic phases reduces gradually with the increasing of aging time due to their dissolution, which results to the reduction of microhardness, but the wear behavior and worn morphology of the coatings are not significant affected by heat treatment. The microstructure and tribological properties of the coatings present excellent high-temperature stability.

Original languageEnglish
Pages (from-to)194-199
Number of pages6
JournalCailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment
Volume36
Issue number3
Publication statusPublished - 25 Mar 2015
Externally publishedYes

Keywords

  • Composite coating
  • High-temperature stability
  • High-temperature wear resistant
  • Microstructure and property

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