Sintering behavior and mechanical properties of injection molded Ti-4.3Fe-7.1Cr alloys

Yoshinori Itoh, Toshiaki Uematsu, Kenji Sato, Hideshi Miura, Mitsuo Niinomi, Masahiko Ikeda

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The metal injection molding process was used to produce the Ti-4.3Fe-7.1Cr alloy compacts using the mixture of Ti and Fe-Cr alloy powders, and mixed elemental powder. The effect of mixed powder and sintering temperature on the densification behavior, mechanical properties and microstructures of the compacts were mainly investigated. The compacts sintered at below 1423 K using a mixed elemental powder showed higher density and tensile strength as compared to the compacts using a mixture of Ti and Fe-Cr alloy powders. However, the tensile elongation at fracture of sintered compacts using both mixed powders was about 3%. Characteristic X-ray images and X-ray diffraction measurement confirms a particle dispersion, which is thought to be precipitation of αTi phase, along the grain boundaries. Eventually, the tensile strength and relative density of the compacts sintered at 1423 K using a mixed elemental powder attain 1160 MPa and 96.9%, respectively.

Original languageEnglish
Pages (from-to)821-826
Number of pages6
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume53
Issue number10
DOIs
Publication statusPublished - 2006 Oct 1

Keywords

  • Mechanical properties
  • Metal injection molding
  • Mixed powder
  • Sintering behavior
  • Ti-4.3Fe-7.1Cr alloy

ASJC Scopus subject areas

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

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