High temperature mechanical properties of TiAl intermetallic alloy parts fabricated by metal injection molding

Toshiko Osada, Yusuke Kanda, Kentaro Kudo, Fujio Tsumori, Hideshi Miura

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

It is not easy to fabricate the complicate shaped titanium aluminide (Ti-Al) components by conventional methods such as machining or forging, and casting leads to inhomogeneous microstructures. Metal injection molding (MIM) has the potential to be a cost-efficient process and near net shape technique, especially for the complex shaped mass-produced components. In this study, Ti-Al intermetallic alloy compacts were fabricated through MIM technique. Sound compacts with over 95 % of relative density and without any warpage or defects were obtained thorough MIM process. Different microstructures of duplex, near lamellar, and full lamellar were obtained by changing the sintering temperature. Their tensile strength at room and high temperature is 85 to 90 % of that of wrought material. Tensile strength of MIM compact would be expected the same level with cast materials by optimization of sintering conditions, densification by HIP treatment and so on.

Original languageEnglish
Pages (from-to)457-461
Number of pages5
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume63
Issue number7
DOIs
Publication statusPublished - Jan 1 2016

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Metal molding
Injection molding
Intermetallics
Mechanical properties
Titanium
Tensile strength
Sintering
Temperature
Microstructure
Hot isostatic pressing
Forging
Densification
Machining
Casting
Acoustic waves
Defects
Costs

All Science Journal Classification (ASJC) codes

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

Cite this

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AU - Kanda, Yusuke

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AU - Tsumori, Fujio

AU - Miura, Hideshi

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