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Microstructure and Mechanical Properties of In Situ TiB/2024 Composites Fabricated by Powder Metallurgy

Journal of Materials Engineering and Performance, ISSN: 1544-1024, Vol: 31, Issue: 11, Page: 8775-8783
2022
  • 11
    Citations
  • 0
    Usage
  • 10
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    11
    • Citation Indexes
      11
  • Captures
    10

Article Description

In the present study, a uniform distribution of nanosized TiB particles in the metal matrix was achieved by powder metallurgy using the composite powders with pre-embedded particles. The composite powders were consolidated into compacts via spark plasma sintering without additional treatment such as mechanical milling or mixing. The concentrated shear stress around the uniformly distributed TiB particles with size similar to the width of the elongated grains during hot extrusion leads into grain fragmentation and refinement. The T4-treated TiB/2024 composites had a better combination of yield strength of 385 MPa, ultimate tensile strength of 568 MPa and uniform elongation of 14.6% compared to the Al-Cu-Mg alloys and Al-Cu-Mg based composites in the published work. The longer uniform elongation of the composites in the present work was analyzed in respects of dislocation accumulation rate k and dislocation recovery rate k.

Bibliographic Details

Nan Li; Fengguo Zhang; Qing Yang; Yi Wu; Mingliang Wang; Jun Liu; Lei Wang; Zhe Chen; Haowei Wang

Springer Science and Business Media LLC

Materials Science; Engineering

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