Irradiation hardening behaviors of tungsten-potassium alloy studied by accelerated 3-MeV W^2+ ions

作     者：Xiao-Liang Yang Long-Qing Chen Wen-Bin Qiu Yang-Yi-Peng Song Yi Tang Xu-Dong Cui Chang-Song Liu Yan Jiang Tao Zhang Jun Tang 杨晓亮;陈龙庆;邱文彬;宋阳一鹏;唐毅;崔旭东;刘长松;蒋燕;张涛;唐军

作者机构：Key Laboratory of Radiation Physics and Technology of Ministry of EducationInstitute of Nuclear Science and TechnologySichuan UniversityChengdu 610064China Sichuan Research Center of New MaterialsInstitute of Chemical MaterialsChina Academy of Engineering PhysicsMianyang 621999China Key Laboratory of Materials PhysicsInstitute of Solid State PhysicsChinese Academy of SciencesHefei 230031China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2020年第29卷第4期

页      面：336-343页

核心收录：

学科分类：08[工学] 082701[工学-核能科学与工程] 0827[工学-核科学与技术] 

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.11975160,11775149,and 11475118) the International Thermonuclear Experimental Reactor(ITER)Program Special,China(Grant No.2011GB108005) 

主　　题：irradiation harden spark plasma sintering WK alloy nanoindentation 

摘      要：Tungsten-potassium(WK)alloy with ultrafine/fine grains and nano-K bubbles is fabricated through spark plasma sintering(SPS)and rolling *** this study,3-MeV W^2+ ion irradiation with a tandem accelerator is adopted to simulate the displacement damage caused by *** the depth of irradiation damage layer is limited to only 500 nm,the hardening behaviors of WK alloy and ITER(International Thermonuclear Experimental Reactor)-W under several damage levels are investigated through Bercovich tip nanoindentation test and other morphological *** indenter size effect(ISE),soft substrate effect(SSE),and damage gradient effect(DGE)are found to influence the measurement of *** or no pop-ins in irradiated samples are observed while visible pop-in events take place in unirradiated *** pile-up with different morphology features around the indentation exists in both WK and *** WK shows a smaller hardness increment than ITER-W under the same condition of displacement *** study provides beneficial information for WK alloy serving as a promising plasma facing materials(PFMs)candidate.