An In-situ Formed TiC Particle Reinforcement Composite Coating Induced by Laser Cladding on Aluminium Alloy

Song Zhang, Yuping Kang, Hau Chung Man, Weitao Wu, Maocai Wang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

2 Citations (Scopus)

Abstract

Metal matrix composite (MMC) surface layer have been formed on 6061 aluminium alloy-surface by laser cladding of using a 2kW continuous wave (CW) Nd-YAG laser. The TiC particle reinforced Al-Ti composite coating was prepared by in-situ contact- reaction with preplaced powder mixtures of Ti and SiC. The formation mechanism of TiC particles has been studied. It was found that composite coating consisting of TiC particles dispersed in coating matrix could be obtained using the correct ratio of Ti to SiC powders and a laser-power density. Compound material cladding coating mainly consists of Ti-Al intermetallic compound and Al supersaturated solid solution. The coating was characterized by good metallurgical bonding between the coating and the substrate, good wettability between the reinforcement TiC and the coating matrix, and a fine-grain structure. The results show that the composite coating greatly enhances the surface hardness.
Original languageChinese (Simplified)
Pages (from-to)426-427
Number of pages2
JournalXiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume30
Issue number6
Publication statusPublished - 1 Dec 2001

Keywords

  • Aluminum alloy
  • In-situ reacdion synthesis
  • Laser cladding
  • Metal matrix composite

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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