Study on the effects of matrix yield strength on hydride phase stability in Zircaloy-2 and Zr 2.5 wt% Nb
Study on the effects of matrix yield strength on hydride phase stability in Zircaloy-2 and Zr 2.5 wt% Nb
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DOI：
10.1016/j.jnucmat.2011.10.051
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发表时间：
2012-06
影响因子：
3.1
通讯作者：
E. Tulk;M. Kerr;M. Daymond
中科院分区：
文献类型：
--
作者：
E. Tulk;M. Kerr;M. Daymond
研究了基体屈服强度对锆合金中氢化物相析出的影响。利用布鲁克海文国家实验室的国家同步辐射光源（NSLS）的X射线衍射测量，研究了锆合金中δ（fcc）和γ（fct）氢化物相的数量与屈服应力和冷却速率的关系。虽然实验结果表明，屈服应力对锆-氢系统中氢化物相的稳定性有显著影响，但对于给定屈服应力的材料，包括缺陷结构和β相分布的其他因素也影响氢化物相的稳定性。这些结果提供了一个可能的解释，在文献中报道的锆-氢系统的氢化物相的稳定性范围很广。
A study on the effect of matrix yield strength on precipitation of hydride phases in zirconium alloys is presented. X-ray diffraction measurements from the National Synchrotron Light Source (NSLS) at Brookhaven National Laboratory were used to characterise the quantity of δ (fcc) and γ (fct) hydride phases in zirconium alloys as a function of yield stress and cooling rate. While experimental results indicate that yield stress has a pronounced effect on hydride phase stability in the zirconium–hydrogen system, other factors including defect structure and β-phase distribution also influence the hydride phase stability, for material of a given yield stress. These results offer a possible explanation for the wide range of hydride phase stability reported in the literature for the zirconium–hydrogen system.