INITIATION AND GROWTH OF SMALL FATIGUE CRACK IN TiAl INTERMETALLICS AT ELEVATED AND ROOM TEMPERATURES
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概要
- 論文の詳細を見る
The initiation and growth of small fatigue crack in a gamma titanum aluminides (TiAl) have been investigated by scanning electron microscope (SEM) in situ observation in vacuum at 750°C and room temperatue. The initiation of crack occurs transgranularly at room temperature, but both transgranularly and intergranularly at 750°C. Small cracks grow at stress intensity factor lower than the threshold value for long crack growth. The fatigue life at 750°C is shorter than that at room temperature. When the stress is modified by Young's modulus, fatigue limit at 750°C is the same as that at room temperature. However, fatigue lives at high stresses showed difference between room and elevated temperatures.
- 社団法人日本材料学会の論文
- 1998-03-15
著者
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Zhu S
Univ. Tokyo
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Zhu Shijie
Nagaoka University Of Technology
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Mutoh Yoshiharu
Nagaoka University of Technology
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Moriya Tomoaki
Nagaoka University of Technology
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Mizuhara Youji
Nippon Steel Corp.
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Mutoh Y
Nagaoka Univ. Technol. Nagaoka
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Mutoh Yoshiharu
Nagaoka Univ. Of Tech.
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