Reaction Sintering of Tial Intermetallic Compound

Yoshihiro Kohama; Masahiro Kimura; Toru Shimizu; Hisaki Watari

doi:10.4028/www.scientific.net/MSF.1016.744

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HomeMaterials Science ForumMaterials Science Forum Vol. 1016Reaction Sintering of Tial Intermetallic Compound

Reaction Sintering of Tial Intermetallic Compound

Abstract:

Improvement of fuel efficiency and reduction of carbon dioxide emission are important issues in the automotive and aviation industries. To achieve these issues, materials that are lightweight and have excellent heat resistance are required. For this reason, various alloys have been proposed. Among them, TiAl intermetallic compounds have excellent low specific gravity and high strength at high temperature. However, TiAl is difficult for machining and easily oxidized, so casting is difficult. For this reason, a method using reaction sintering has been studied, though it is difficult to obtain low oxygen concentration TiAl alloy powder. Therefore, the process to produce TiAl parts from Ti powder and Al powder is studied. However, in this method, when a mixed powder of Ti and Al is sintered, a phenomenon called ignition with a rapid temperature increasing may occurs, and ignited parts are swelling and becomes high porosity.

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Periodical:

Materials Science Forum (Volume 1016)

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744-748

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.1016.744

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Online since:

January 2021

Authors:

Yoshihiro Kohama*, Masahiro Kimura, Toru Shimizu, Hisaki Watari

Keywords:

Combustion, Reaction Sintering, TiAl

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References

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