Internal crack initiation in high-cycle fatigue of a Ti-Fe-O alloy at liquid nitrogen temperature
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概要
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By using scanning electron microscope equipped with EDS and 3D analyses, microstructure and crack initiation site of a Ti-Fe-O alloy were characterized in order to clarify the internal fatigue crack generation. Most of fatigue samples failed at 77 K exhibited internal crack initiation, but pre-existing defects were not detected in the vicinity of initiation sites. The alloy consisted of recovered α grain and recrystallized α grain. The internal crack initiation site consisted of single or plural facets. Facet was transgranularly formed, and was fitted to a recrystallized α grain judging from its morphology, size, and chemistry.
- Minerals, Metals & Materials Societyの論文
著者
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Umezawa O
Yokohama National Univ. Yokohama Jpn
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Umezawa Osamu
Department Of Mechanical Engineering And Materials Science Yokohama National University
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Umezawa O.
National Institute For Materials Science
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Umezawa Osamu
National Institute For Materials Science
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Umezawa Osamu
National Research Institute For Metals
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SUZUKI Toshiyuki
Kogakuin University
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Suzuki T
Electrotechnical Laboratory Agency Of Industrial Science And Technology
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Yokoyama Hisanaga
Graduate Student Kogakuin University
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