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首页> 外文期刊>Journal of Nuclear Materials: Materials Aspects of Fission and Fusion >EFFECT OF THICKNESS ON THE FRACTURE TOUGHNESS OF IRRADIATED ZR-2.5NB PRESSURE TUBES
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EFFECT OF THICKNESS ON THE FRACTURE TOUGHNESS OF IRRADIATED ZR-2.5NB PRESSURE TUBES

机译：厚度对辐照ZR-2.5NB压力管断裂韧性的影响

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摘要

The effect of thickness on the fracture toughness of irradiated cold-worked Zr-2.5Nb pressure tube material was measured. With thickness between 2, and 4.2 mm, the fracture toughness decreases with increasing thickness. The crack initiation toughness, J(0.2), leveled off at about 3 mm, but the crack growth toughness, dJ/da, was still dropping as the thickness increased to 4.2 mm. Comparison with data from two irradiated heat-treated Zr-2.5Nb pressure tube materials indicates that their difference in fracture toughness may be explained by the thickness effect. (C) 1997 Elsevier Science B.V. [References: 10]
机译：测量了厚度对辐照的冷加工Zr-2.5Nb压力管材料的断裂韧性的影响。当厚度在2到4.2 mm之间时，断裂韧性会随着厚度的增加而降低。裂纹萌生韧性J（0.2）稳定在约3 mm，但是随着厚度增​​加到4.2 mm，裂纹扩展韧性dJ / da仍在下降。与两种辐照的热处理过的Zr-2.5Nb压力管材料的数据比较表明，其断裂韧性的差异可以用厚度效应来解释。 （C）1997 Elsevier Science B.V. [参考：10]

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