摘要
采用放电等离子烧结技术制备了W_(28)Ta_(28)V_(28)Zr_(8)Sc_(8)高熵合金,研究了高熵合金在低能量、高通量氦离子辐照下的损伤行为。结果表明,在相同He离子辐照参数下,高熵合金表现出比纯W更优异的抗辐照损伤性能。不同He离子能量条件下,高熵合金中出现严重Fuzz结构时的He离子能量阈值远高于纯W。在相同辐照参数下,高熵合金有着明显小于纯W的Fuzz层厚度。W28Ta28V28Zr8Sc8高熵合金中不同相区在辐照后表现出不同的表面形貌特点,这与构成相区主要元素的He离子辐照行为有关。通过设计高熵合金的显微组织,可以获得优良的抗辐照材料。
The damage behavior under low-energy and high-flux helium ions irradiation condition of the W_(28)Ta_(28)V_(28)Zr_(8)Sc_(8)high-entropy alloy,prepared by spark plasma sintering(SPS),was studied.The results show that the high-entropy alloy reveals better resistance to irradiation damage than pure W under the same He ions irradiation condition.Under different He ion energies,the He ions threshold energy when the serious“Fuzz”structure appears in high-entropy alloy is much higher than that of pure W.With the same irradiation parameters,the“Fuzz”layer thickness of high-entropy alloy is obviously smaller than that of pure W.After irradiation,the different phase regions of W_(28)Ta_(28)V_(28)Zr_(8)Sc_(8)high-entropy alloy show different surface morphology characteristics,which are related to the He ion irradiation behavior of the main elements constituting the phase region.An excellent irradiation damage resistant material could be achieved by designing the microstructure of the high entropy alloy.
作者
王亚锋
陈志鸿
徐云凤
罗来马
昝祥
朱晓勇
吴玉程
Wang Yafeng;Chen Zhihong;Xu Yunfeng;Luo Laima;Zan Xiang;Zhu Xiaoyong;Wu Yucheng(School of Materials Science and Engineering,Hefei University of Technology,Hefei 230009,China;National-Local Joint Engineering Research Centre of Nonferrous Metals and Processing Technology,Hefei 230009,China;Copper Alloy and Forming Engineering Research Center of Ministry of Education,Hefei 230009,China)
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2023年第1期339-344,共6页
Rare Metal Materials and Engineering
基金
国家重点研发磁约束聚变能发展专项(2019YFE03120002)。
