Enhancing radiation tolerance by controlling defect mobility and migration pathways in multicomponent single-phase alloys

被引:736
作者
Lu, Chenyang [1 ]
Niu, Liangliang [1 ]
Chen, Nanjun [1 ]
Jin, Ke [2 ]
Yang, Taini [1 ]
Xiu, Pengyuan [1 ]
Zhang, Yanwen [2 ,3 ]
Gao, Fei [1 ]
Bei, Hongbin [2 ]
Shi, Shi [4 ]
He, Mo-Rigen [4 ]
Robertson, Ian M. [4 ]
Weber, William J. [2 ,3 ]
Wang, Lumin [1 ,5 ]
机构
[1] Univ Michigan, Dept Nucl Engn & Radiol Sci, Ann Arbor, MI 48109 USA
[2] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA
[3] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA
[4] Univ Wisconsin, Dept Engn Phys, Madison, WI 53706 USA
[5] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA
关键词
NI; IRRADIATION; EVOLUTION; COPPER; STEEL; DIFFUSION; ENTROPY; HELIUM; BINARY; ATOMS;
D O I
10.1038/ncomms13564
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
A grand challenge in material science is to understand the correlation between intrinsic properties and defect dynamics. Radiation tolerant materials are in great demand for safe operation and advancement of nuclear and aerospace systems. Unlike traditional approaches that rely on microstructural and nanoscale features to mitigate radiation damage, this study demonstrates enhancement of radiation tolerance with the suppression of void formation by two orders magnitude at elevated temperatures in equiatomic single-phase concentrated solid solution alloys, and more importantly, reveals its controlling mechanism through a detailed analysis of the depth distribution of defect clusters and an atomistic computer simulation. The enhanced swelling resistance is attributed to the tailored interstitial defect cluster motion in the alloys from a long-range one-dimensional mode to a short-range three-dimensional mode, which leads to enhanced point defect recombination. The results suggest design criteria for next generation radiation tolerant structural alloys.
引用
收藏
页数:8
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