Optimization of MIM process for Ti-6Al-7Nb alloy powder

Toshiko Osada, Hideshi Miura, Yoshinori Itoh, Makoto Fujita, Nobuhiro Arimoto

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


Ti-6Al-7Nb alloy has been developed for more suitable biomaterial in place of Ti-6Al-4V alloy because of vanadium toxicity to human body. In this study, the metal injection molding process was applied to produce the Ti-6Al-7Nb alloy compacts using alloy powder. For comparison, the mixed elemental powders of Ti, Al and Nb, and pre-alloyed powders of Ti-Al and Al-Nb were also used. The effects of sintering conditions on the microstructures, relative density and mechanical properties of injection molded compacts were investigated. Sintered compacts using alloy powder showed relatively higher mechanical properties than the compacts using mixed powder. Eventually, the compacts using alloy powder were improved to be 900 MPa of tensile strength with 15 % of elongation, which are comparable to the properties of wrought materials.

Original languageEnglish
Pages (from-to)726-731
Number of pages6
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Issue number10
Publication statusPublished - Oct 2008

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry


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