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| IN SITU ELECTRON MICROSCOPY STUDY ON PRECIPITATION OF ZIRCONIUM HYDRIDES INDUCED BY STRAIN AND STRESS IN ZIRCALOY-2 |
| ZHOU Bangxin;ZHENG Sikui;WANG Shunxin Southwest Centre for Nuclear Reactor Engineering Research and Design Chengdu |
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Cite this article:
ZHOU Bangxin;ZHENG Sikui;WANG Shunxin Southwest Centre for Nuclear Reactor Engineering Research and Design Chengdu. IN SITU ELECTRON MICROSCOPY STUDY ON PRECIPITATION OF ZIRCONIUM HYDRIDES INDUCED BY STRAIN AND STRESS IN ZIRCALOY-2. Acta Metall Sin, 1989, 25(3): 34-39.
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Abstract The precipitation hydrides induced by stress were found to be gammaphase with orientation relationship of (110)_γ//(1120)_(αZr),(001)γ//(0001)_(αZr)between γ-hydride and surrounding matrix. The growth of-hydrides exhibiter a quickest ratealong [110] direction, that brings them in taper shape. After cracking at hydridematrix beundary, a new one will precipitate at the tip of cracks. This isthe essential process of hydrogen-induced delayed cracking in zircaloy The pre-cipitating hydrides induced by strain were found to be delta phase Phase with bothorientation relationships of (111)_δ//(0001)_(αZr)(110)_δ//(1120)_(αZr) and (010)_δ//(0001)_(αZr)(001)_δ//(1120)_(αZr) between δ-hydride and surrouding matrix. The δ-hydride becomesmuch finer as the strain rate increased.
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Received: 18 March 1989
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| 1 Perryman E C W. Nucl Energy, 1978; 17: 95
2 Simpson C J, Ells C E. J Nucl Mater, 1974; 52: 289
3 Takano S, Suzuki T. Acta Metall, 1974; 22: 265 Koike S, Suzuki T. Acta Metall, 1981; 29: 553
4 Hall I W, Hammond C. Met Sci, 1978; 12: 339
5 Cann C D, Sexton E E. Acta Metall, 1980; 28: 1215
6 徐永波,刘民治,李恒武,苏会和,朱桂秋.金属学报,1979;15:367
7 Bradbrook J S, Lorimer G W. Ridley N. J Nucl Mater, 1972; 42: 142
8 Nath B, Lorimer G W, Ridley N. J Nucl Mater, 1973; 49: 42
9 Carpenter G J C. J Nucl Mater, 1973; 48: 264
10 Weatherly G C. Acta Metall, 1981; 29: 501
11 Nuttall K, Rogowski A T. J Nucl Mater, 1979; 80: 279
12 Nuttall K. In: Azou P ed, Hydrogen et Materiaux, Vol. Ⅱ, 3rd International Congress. Paris, 7--11 Juin 1982, Paris; Imprimplans, 1982: 683 |
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