Strain evolution during hydride precipitation in Zircaloy-4 observed with synchrotron X-ray diffraction
Strain evolution during hydride precipitation in Zircaloy-4 observed with synchrotron X-ray diffraction
复制标题
用同步加速器 X 射线衍射观察到 Zircloy-4 中氢化物沉淀过程中的应变演变
DOI：
10.1016/j.jnucmat.2016.01.039
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发表时间：
2016
影响因子：
3.1
通讯作者：
Blackmur M
中科院分区：
文献类型：
--
作者：
Blackmur M
Synchrotron X-ray diffraction was used to evaluate strain evolution observed in Zircaloy-4 undergoing hydride precipitation during a range of thermal operations. During continuous heating, a change in the constraining effect of the matrix was observed at a temperature of 280 °C, thought to be the result of matrix dilatation from interstitial hydrogen. A deconvolution of the thermal, chemical and mechanical sources of strain during quench and dwell operations identified a non-negligible mechanical effect in the matrix. During these dwells, slow strain rate relaxation of elastic strains was seen in the matrix and hydride, suggesting that time dependent relaxation of misfit stresses may be possible at reactor relevant temperatures. Notable anisotropy was observed between the rolling and transverse directions, identified as being the likely product of a similar anisotropy in the relaxation of the hydride misfit between the <112¯0>α and <11¯00>α matrix directions, owing to the differing coherency of these two interfaces.
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期刊：
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通讯作者：
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1998
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通讯作者：
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1972
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通讯作者：
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