Microstructure and mechanical behavior of Ti25Nb25Zr alloy prepared from pre-alloyed and hydride-mixed elemental powders

Bhupendra Sharma, Sanjay Kumar Vajpai, Mie Kawabata, Takayoshi Nakano, Kei Ameyama

Research output: Contribution to journalArticlepeer-review

Abstract

A study has been undertaken on the feasibility of the powder-metallurgy manufacturing process to fabricate β-type Ti25Nb25Zr alloy (mass%) for biomedical applications. The Ti25Nb25Zr alloy was fabricated from a mixture of TiH2 with constituent elemental powders, and from a pre-alloyed Plasma Rotating Electrode Processed (PREP) Ti25Nb25Zr powder, separately. It is shown that different processing methods led to different microstructures and mechanical properties. The Ti25Nb25Zr compact prepared by pre-alloyed powder exhibits poor strength whereas TiH2 processed Ti25Nb25Zr compact exhibits comparatively ultra-fine grained microstructure with significantly improved strength. The proposed fabrication method may have several opportunities to fabricate metallic alloys with enhanced mechanical properties.

Original languageEnglish
Pages (from-to)562-566
Number of pages5
JournalMaterials Transactions
Volume61
Issue number4
DOIs
Publication statusPublished - 2020
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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