Microstructural and wear properties of the Al-B4C composite coating produced by hot-press sintering on AA-2024 alloy

Ozay C., Ballikaya H., Dagdelen F., Karlidag O. E.

JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, vol.35, no.7, pp.2895-2901, 2021 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 35 Issue: 7
  • Publication Date: 2021
  • Doi Number: 10.1007/s12206-021-0613-1
  • Journal Name: JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Page Numbers: pp.2895-2901
  • Keywords: Hot press sintering, Al-B4C coating, Wear, MMCs, AL MATRIX COMPOSITES, MECHANICAL-PROPERTIES, CORROSION-RESISTANCE, B4C, TEMPERATURE, BEHAVIORS, PROTECTION, AA2024-T3, FRICTION, HARDNESS
  • Inonu University Affiliated: Yes

Abstract

In this study, the surface of an AA-2024 alloy was covered with reinforced composite coating using hotpress sintering method. Al and B4C powders were synthesized through mechanical alloying technique and coated on the AA-2024 substrate at different rates. The microstructure of the intermediate transition region formed between the substrate (AA-2024 Al alloy) and the coating layer (Al/B4C MMCs), the microstructure of the Al/B4C metal matrix composites (MMCs) coating, the microhardness, and the adhesive wear resistance of the Al/B4C MMCs coating layer were investigated. It was observed that B4C powders homogeneously dispersed in the microstructure of the Al/B4C MMCs coating layer, moreover, the Al matrix and B4C reinforcement particles were bonded without a gap. It was also determined that an interface bonding occurred between Al/B4C MMCs coating layer and the AA-2024 substrate. Accordingly, it was determined that with the increase of B4C reinforcement particle ratio, the hardness of the coating layer, and the wear resistance increased.