相干氧化物界面对氦（He）离子辐照氧化物弥散强化钢行为的影响

The Influence of Coherent Oxide Interfaces on the Behaviors of Helium (He) Ion Irradiated ODS W.

作者信息

Liu Xing, Dong Zhi, Shen Shangkun, Wang Yufei, Wu Zefeng, Hao Liyu, Du Jinlong, Zhang Jian, Ma Zongqing, Liu Yongchang, Fu Engang

机构信息

State Key Laboratory of Nuclear Physics and Technology, Department of Technical Physics, School of Physics, Peking University, Beijing 100871, China.

State Key Laboratory of Hydraulic Engineering Simulation and Safety, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China.

出版信息

Materials (Basel). 2023 Jun 26;16(13):4613. doi: 10.3390/ma16134613.

DOI:10.3390/ma16134613

PMID:37444926

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10342720/

Abstract

Tungsten (W), as a promising plasma-facing material for fusion nuclear reactors, exhibits ductility reduction. Introducing high-density coherent nano-dispersoids into the W matrix is a highly efficient strategy to break the tradeoff of the strength-ductility performance. In this work, we performed helium (He) ion irradiation on coherent oxide-dispersoids strengthened (ODS) W to investigate the effect of coherent nanoparticle interfaces on the behavior of He bubbles. The results show that the diameter and density of He bubbles in ODS W are close to that in W at low dose of He ion irradiation. The radiation-induced hardening increment of ODS W, being 25% lower than that of pure W, suggests the involvement of the coherent interface in weakening He ion irradiation-induced hardening and emphasizes the potential of coherent nano-dispersoids in enhancing the radiation resistance of W-based materials.

摘要

钨（W）作为一种有前景的用于聚变核反应堆的面向等离子体材料，表现出延展性降低的现象。将高密度相干纳米弥散相引入钨基体是打破强度-延展性性能权衡的一种高效策略。在这项工作中，我们对相干氧化物弥散相强化（ODS）钨进行了氦（He）离子辐照，以研究相干纳米颗粒界面对氦泡行为的影响。结果表明，在低剂量氦离子辐照下，ODS钨中氦泡的直径和密度与钨中的相近。ODS钨的辐射诱导硬化增量比纯钨低25%，这表明相干界面参与了弱化氦离子辐照诱导的硬化过程，并强调了相干纳米弥散相在提高钨基材料抗辐射性能方面的潜力。