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

Author

Listed:
  • Chenyang Lu

    (University of Michigan)

  • Liangliang Niu

    (University of Michigan)

  • Nanjun Chen

    (University of Michigan)

  • Ke Jin

    (Oak Ridge National Laboratory)

  • Taini Yang

    (University of Michigan)

  • Pengyuan Xiu

    (University of Michigan)

  • Yanwen Zhang

    (Oak Ridge National Laboratory
    University of Tennessee)

  • Fei Gao

    (University of Michigan)

  • Hongbin Bei

    (Oak Ridge National Laboratory)

  • Shi Shi

    (University of Wisconsin-Madison)

  • Mo-Rigen He

    (University of Wisconsin-Madison)

  • Ian M. Robertson

    (University of Wisconsin-Madison)

  • William J. Weber

    (Oak Ridge National Laboratory
    University of Tennessee)

  • Lumin Wang

    (University of Michigan
    University of Michigan)

Abstract

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.

Suggested Citation

  • Chenyang Lu & Liangliang Niu & Nanjun Chen & Ke Jin & Taini Yang & Pengyuan Xiu & Yanwen Zhang & Fei Gao & Hongbin Bei & Shi Shi & Mo-Rigen He & Ian M. Robertson & William J. Weber & Lumin Wang, 2016. "Enhancing radiation tolerance by controlling defect mobility and migration pathways in multicomponent single-phase alloys," Nature Communications, Nature, vol. 7(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms13564
    DOI: 10.1038/ncomms13564
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    Cited by:

    1. Chang Liu & Wenjun Lu & Wenzhen Xia & Chaowei Du & Ziyuan Rao & James P. Best & Steffen Brinckmann & Jian Lu & Baptiste Gault & Gerhard Dehm & Ge Wu & Zhiming Li & Dierk Raabe, 2022. "Massive interstitial solid solution alloys achieve near-theoretical strength," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    2. Ying Han & Hangman Chen & Yongwen Sun & Jian Liu & Shaolou Wei & Bijun Xie & Zhiyu Zhang & Yingxin Zhu & Meng Li & Judith Yang & Wen Chen & Penghui Cao & Yang Yang, 2024. "Ubiquitous short-range order in multi-principal element alloys," Nature Communications, Nature, vol. 15(1), pages 1-13, December.

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