Reorientation of Hydrides and Its Effect on the Mechanical Properties of Zr-Nb-Sn-Fe Cladding Tubes
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概要
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The reorientation of hydrides and its effect on the fracture of Zr–Nb–Sn–Fe cladding tubes were investigated. The reorientation of hydrides along the radial direction was most pronounced if the tube was cooled from 573 to 473 K under circumferential loading. Reorientation occurred much less frequently at either higher (from 673 to 573 K) or lower (from 473 to 373 K) temperature range. The strength decreased to 250 MPa and the ductility decreased to zero in the tube which was reorientation-treated from 573 to 473 K (RS32AC). Fracture surface of RS32AC sample exhibited flat cleavage fracture along the radial hydride platelet. The reorientation of hydrides was also found to increase with increase of loading time, suggesting time dependent stress-aided dissolution of circumferential hydrides and re-precipitation of radial hydrides.
- 社団法人 日本原子力学会の論文
- 2005-02-25
著者
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Choi Young
Department Of Physics Kyung Hee University
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HONG Sun
Department of Metallurgical Engineering, Chungnam National University
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Lee Kang
Seah Besteel Co.
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JOO Ki
Department of Metallurgical Engineering, Chungnam National University
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KIM Kyu
Research and Development Center, KEPCO Nuclear Fuel Co., Ltd.
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Joo Ki
Department Of Metallurgical Engineering Chungnam National University
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Choi Young
Department Of Biology Inha University
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Kim Kyu
Research And Development Center Kepco Nuclear Fuel Co. Ltd.
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Hong Sun
Department Of Forest Resources Kookmin University
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Choi Young
Department Of Metallurgical Engineering Chungnam National University
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Hong Sun
Department Of Metallurgical Engineering Chungnam National University
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Choi Young
Department Of Biological Sciences Purdue University Calumet
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