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Effect of Macro and Micro Stresses on Hardness of Titanium Aluminides

Published online by Cambridge University Press:  06 March 2019

Hiroyuki Tabata ,
Zenjiro Yajima  and
Yukio Hirose
Hiroyuki Tabata
Affiliation:
Industrial Research Institute of Ishikawa Ro-1 Tomizu-machi, Kanazawa 920-02, Japan
Zenjiro Yajima
Affiliation:
Department of Mechanical Engineering, Kanazawa Institute of Technology, 7-1 Oogigaoka, Nonoichi, Kanazawa 921, Japan
Yukio Hirose
Affiliation:
Department of Material Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa 920-11, Japan
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Abstract

The changes in micro structure and hardness of massively transformed Ti-48mol%Al alloys with tempering were investigated. The results were correlated to the X-ray profile analysis. The integral width of Cu-kα1 net peak especially from γ (111) plane related well to the hardness change. Hall plots suggested that lattice strains are released by spheroidizing with the recovery at low temperature and then small particles grow at higher temperatures, as might support the microstructural change. The small particle size is therefore presumed to be the controlling factor for the hardness. Macro stress is shown not to affect the hardness as much.

Type
Research Article
Information
Advances in X-Ray Analysis , Volume 39: Forty-Fourth Annual Conference on Applications of X-ray Analysis, July 31 - August 4, 1995 , 1995 , pp. 405 - 412
Copyright
Copyright © International Centre for Diffraction Data 1995

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References

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