Two types of Zircaloy-4 (alpha-annealed and beta-quenched) were investigated in their different forms. It was found that mechanical properties of Zircaloy-4 are affected significantly by welding and hydrogen-charging followed by neutron irradiation. Evaluation of microstructural properties of samples showed that these changes are mainly due to the formation of secondary phases such as hydrides—mostly along grain boundaries, dislocation channeling and their disruptions, and the increase in the <a> type dislocation loops.

中文翻译：

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不同实验条件下Zircaloy-4的力学和微观结构性能研究

研究了两种Zircaloy-4（α退火和β​​淬火）的不同形式。发现Zircaloy-4的机械性能受焊接和充氢以及中子辐照的影响很大。样品微观结构性质的评估表明，这些变化主要归因于次生相的形成，例如氢化物-主要沿晶界，位错通道及其破坏以及<a>型位错环的增加。