New insight on bubble-void transition effects in irradiated materials
New insight on bubble-void transition effects in irradiated materials
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关于辐照材料中气泡-空隙转变效应的新见解
DOI：
10.1016/0022-3115(93)90228-q
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发表时间：
1993
影响因子：
3.1
通讯作者：
V. Dubinko
中科院分区：
文献类型：
--
作者：
V. Dubinko
空腔和点缺陷之间的弹性相互作用的帐户被证明是导致在辐照立方晶体中的气泡-空隙转变效应的新的临界量。与以前的理论相比，本理论不仅给出了确定偏压驱动的空隙膨胀的发生的临界量，而且给出了空隙的最大固定数密度和相应的平均半径以及双峰制度的持续时间。孔隙密度和膨胀率被证明是独立的气体水平。在低温/高剂量率的区域，空隙密度似乎是独立的辐照参数以及。材料常数之间的关系被发现，在该稳定的气泡发生通过位错环冲压机制，导致在照射下的空腔行为，如饱和（甚至抑制）的空隙膨胀和空隙晶格的形成急剧变化。理论结果与实验数据进行了比较，并提出了进一步的实验测试。
An account of elastic interaction between cavities and point defects is shown to result in new critical quantities for bubble-void transition effects in irradiated cubic crystals. In contrast to previous theories, the present one gives not only critical quantities which determine the onset of bias-driven void swelling but the maximum stationary number density and the corresponding mean radius of voids as well as the duration of the bimodal regime. The void density and swelling rate are shown to be independent from the gas level. In the region of low temperatures/high dose rates, the void density appears to be independent from irradiation parameters as well. The relationships among material constants are found at which the stabilization of gas bubbles occurs via the dislocation loop punching mechanism resulting in a drastic change in the cavity behaviour under irradiation such as the saturation (or even suppression) of void swelling and void lattice formation. The theoretical results are compared with experimental data and further experimental tests are proposed.