Effect of Microstructure on Short Fatigue Crack Growth of α+β Titanium Alloys
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概要
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Fatigue crack initiation and early stage of crack growth for Ti-6Al-4V and Ti-4.5Al-3V-2Fe-2Mo were investigated on notched specimens. <I>In-situ</I> observation of fatigue cracking processes was made using a fatigue testing machine mounted in a scanning electron microscope. It was found that Ti-4.5Al-3V-2Fe-2Mo alloy with very fine α grains of approximately 2μm exhibited a much higher fatigue strength at 107 cycles than Ti-6Al-4V alloy. However, in fatigue life an opposite trend was obtained in the short life regime. The observed fatigue behavior in both the long and short life regimes is discussed in terms of metallurgical factors responsible for the fatigue behavior of the present materials.
- 社団法人 日本鉄鋼協会の論文
著者
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Nakajima Katsumi
Department of Food and Nutrition, Japan Women’s University
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MIYATA Takashi
Department of Iron and Steel Engineering, Nagoya University
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Nakajima Katsumi
Department Of Biological Control System National Institute For Physiological Sciences
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Nakajima Katsumi
Department Of Materials Science And Engineering Nagoya University
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TERAO Keiko
Department of Materials Science and Engineering, Nagoya University
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Terao Keiko
Department Of Materials Science And Engineering Nagoya University
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Miyata Takashi
Department Of Materials Science And Engineering Nagoya University
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Miyata Takashi
Department Of Chemistry And Materials Engineering Kansai University
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Miyata Takashi
Department Of Biophysics Graduate School Of Sciecne Kyoto University
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Miyata Takashi
Department Of Biophysics Faculty Of Science Kyoto University
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MIYATA Takashi
Department of Applied Physics, Tokai University
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