Microstructure, Mechanical Strength, and Tribological Behavior of B4C/WS2-Hybrid-Reinforced B319 Aluminum Matrix Composites

Taşcı U.

Lubricants, cilt.13, sa.6, ss.13-38, 2025 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 13 Sayı: 6
  • Basım Tarihi: 2025
  • Doi Numarası: 10.3390/lubricants13060247
  • Dergi Adı: Lubricants
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.13-38
  • Gazi Üniversitesi Adresli: Evet

Özet

Hybrid B319 aluminum matrix composites reinforced with 10 wt% B4C and varying WS2 contents were fabricated to improve mechanical and tribological performance. The composite containing 2 wt% WS2 showed the best overall results, with a 29% increase in microhardness (104.3 HV) and a 20% improvement in transverse rupture strength (196.3 MPa) compared to unreinforced B319. Additionally, the friction coefficient dropped by 64% (from 0.497 to 0.178), and the specific wear rate was reduced to 4.34 x 10(-6) mm(3)/Nm. Microstructural analyses confirmed homogeneous reinforcement distribution and adequate interfacial bonding. These enhancements are attributed to the dual action of B4C-induced strengthening and WS2-mediated tribo-film formation, offering a promising solution for lightweight, wear-resistant components in engineering applications.