Recent Studies on Void Shrinkage in Metallic Materials Subjected to In Situ Heavy Ion Irradiations
Recent Studies on Void Shrinkage in Metallic Materials Subjected to In Situ Heavy Ion Irradiations
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DOI：
10.1007/s11837-020-04358-3
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发表时间：
2020-09
期刊：
影响因子：
2.6
通讯作者：
T. Niu;M. Nasim;R. G. S. Annadanam;C. Fan;Jin Li;Z. Shang;Y. Xue;Anter El-Azab;H. Wang;Xinghang Zhang
中科院分区：
文献类型：
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作者：
T. Niu;M. Nasim;R. G. S. Annadanam;C. Fan;Jin Li;Z. Shang;Y. Xue;Anter El-Azab;H. Wang;Xinghang Zhang
在辐射作用下，金属材料中空洞的不断形成和增长会导致材料的显微组织损伤和力学性能下降。与辐照金属材料中常见的空洞膨胀形成鲜明对比的是，纳米多孔金属材料中的纳米空洞在辐射过程中会收缩，从而增强了金属材料的辐射耐受能力。本文综述了金属材料在原位重离子辐照下孔径收缩的最新研究进展。此外，我们展示了机器学习在识别和跟踪纳米空洞演变方面的能力。简要总结了模拟研究揭示的辐射致空洞收缩的物理机制。
The continuous formation and growth of voids induced by radiations in metallic materials may lead to significant microstructure damage and degradation of mechanical properties. In sharp contrast to the void swelling commonly observed in irradiated metallic materials, nanovoids in nanoporous metallic materials are found to shrink during radiation and thus nanovoids enhance the radiation tolerance of metallic materials. This article reviews recent studies on size-dependent void shrinkage in metallic materials subject to in situ heavy ion irradiation. Furthermore, we demonstrate the capability of machine learning in identifying and tracking the evolution of nanovoids. The physical mechanisms of radiation induced void shrinkage revealed by simulation studies are briefly summarized.