Microstructure evolution of MAB-phase WAlB during helium irradiation and post-irradiation annealing

被引：0

作者：

Wang, Zizhao ^{[1
]}

Qin, Shan ^{[1
]}

Gao, Jie ^{[1
]}

Mao, Jiangjiang ^{[1
]}

Wang, Meng ^{[1
]}

Xin, Bo ^{[1
,2
]}

Shi, Liqun ^{[1
]}

机构：

[1] Fudan Univ, Inst Modern Phys, Key Lab Nucl Phys & Ion Beam Applicat, Shanghai 200433, Peoples R China

[2] Baotou Res Inst Rare Earths, State Key Lab Baiyunobo Rare Earth Resource Res &, Baotou 014030, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2025年 / 51卷 / 02期

基金：

中国国家自然科学基金;

关键词：

MAB phase; WAlB; He irradiation; Annealing; He concentration profile; RADIATION-DAMAGE; MOALB; TOLERANCE; BEHAVIOR; BORIDES; SRIM; MO;

D O I：

10.1016/j.ceramint.2024.11.143

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Ternary nano-laminated MAB phase WAlB has demonstrated exceptional neutron and gamma-ray shielding capacities, a property that can be attributed to its high atomic contents of tungsten (W) and boron (B). However, the substantial helium (He) production resulting from the reaction between neutrons and B elements makes WAlB susceptible to the potential damage of He effects that have been widely recognized in nuclear structural materials. Here, we report the first investigation on the microstructural evolution of WAlB induced by He ions irradiation and post-irradiation annealing. The irradiation-induced amorphization and annealing-activated epitaxial recrystallization of WAlB were revealed by the transmission electron microscope (TEM) and Raman spectroscopy. He behavior in the irradiated WAlB was quantitatively analyzed using elastic recoil detection analysis (ERDA). The annealing-induced alterations in He concentration depth profiles suggested the remarkable temperature-dependent characteristics of He migration behavior in crystalline and amorphous structures within WAlB.

引用

页码：1674 / 1681

页数：8

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