中国物理B ›› 2024, Vol. 33 ›› Issue (4): 46401-046401.doi: 10.1088/1674-1056/ad0ec6

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In situ observation of the phase transformation kinetics of bismuth during shock release

Jiangtao Li(李江涛)1,2, Qiannan Wang(王倩男)1,2, Liang Xu(徐亮)1,2, Lei Liu(柳雷)1, Hang Zhang(张航)1,2, Sota Takagi3,4, Kouhei Ichiyanagi4, Ryo Fukaya4, Shunsuke Nozawa4, and Jianbo Hu(胡建波)1,2,†   

  1. 1 Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, China;
    2 State Key Laboratory for Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, China;
    3 Japan Society for the Promotion of Science, Tokyo, 102-0083, Japan;
    4 Institute of Materials Structure Science, High Energy Accelerator Research Organization(KEK), Ibaraki, 305-8572, Japan
  • 收稿日期:2023-09-11 修回日期:2023-11-18 接受日期:2023-11-22 出版日期:2024-03-19 发布日期:2024-03-22
  • 通讯作者: Jianbo Hu E-mail:jianbo.hu@caep.cn
  • 基金资助:
    This study was supported by the National Natural Science Foundation of China (Grant No. 12072331), the Science Challenge Project (Grant No. TZ2018001), the Japan Society for the Promotion of Science (Grant Nos. 17H04820 and 21H01677) and the Foundation of the United Laboratory of High-Pressure Physics and Earthquake Science, and was performed under the approval of the Photon Factory Program Advisory Committee (Proposal Nos. 2016S2-006 and 2020G680).

In situ observation of the phase transformation kinetics of bismuth during shock release

Jiangtao Li(李江涛)1,2, Qiannan Wang(王倩男)1,2, Liang Xu(徐亮)1,2, Lei Liu(柳雷)1, Hang Zhang(张航)1,2, Sota Takagi3,4, Kouhei Ichiyanagi4, Ryo Fukaya4, Shunsuke Nozawa4, and Jianbo Hu(胡建波)1,2,†   

  1. 1 Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, China;
    2 State Key Laboratory for Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, China;
    3 Japan Society for the Promotion of Science, Tokyo, 102-0083, Japan;
    4 Institute of Materials Structure Science, High Energy Accelerator Research Organization(KEK), Ibaraki, 305-8572, Japan
  • Received:2023-09-11 Revised:2023-11-18 Accepted:2023-11-22 Online:2024-03-19 Published:2024-03-22
  • Contact: Jianbo Hu E-mail:jianbo.hu@caep.cn
  • Supported by:
    This study was supported by the National Natural Science Foundation of China (Grant No. 12072331), the Science Challenge Project (Grant No. TZ2018001), the Japan Society for the Promotion of Science (Grant Nos. 17H04820 and 21H01677) and the Foundation of the United Laboratory of High-Pressure Physics and Earthquake Science, and was performed under the approval of the Photon Factory Program Advisory Committee (Proposal Nos. 2016S2-006 and 2020G680).

摘要: A time-resolved x-ray diffraction technique is employed to monitor the structural transformation of laser-shocked bismuth. Results reveal a retarded transformation from the shock-induced Bi-V phase to a metastable Bi-IV phase during the shock release, instead of the thermodynamically stable Bi-III phase. The emergence of the metastable Bi-IV phase is understood by the competitive interplay between two transformation pathways towards the Bi-IV and Bi-III, respectively. The former is more rapid than the latter because the Bi-V to B-IV transformation is driven by interaction between the closest atoms while the Bi-V to B-III transformation requires interaction between the second-closest atoms. The nucleation time for the Bi-V to Bi-IV transformation is determined to be 5.1±0.9 ns according to a classical nucleation model. This observation demonstrates the importance of the formation of the transient metastable phases, which can change the phase transformation pathway in a dynamic process.

关键词: phase transformation, time-resolved x-ray diffraction (XRD), bismuth, metastable phase, nonequilibrium phase diagram

Abstract: A time-resolved x-ray diffraction technique is employed to monitor the structural transformation of laser-shocked bismuth. Results reveal a retarded transformation from the shock-induced Bi-V phase to a metastable Bi-IV phase during the shock release, instead of the thermodynamically stable Bi-III phase. The emergence of the metastable Bi-IV phase is understood by the competitive interplay between two transformation pathways towards the Bi-IV and Bi-III, respectively. The former is more rapid than the latter because the Bi-V to B-IV transformation is driven by interaction between the closest atoms while the Bi-V to B-III transformation requires interaction between the second-closest atoms. The nucleation time for the Bi-V to Bi-IV transformation is determined to be 5.1±0.9 ns according to a classical nucleation model. This observation demonstrates the importance of the formation of the transient metastable phases, which can change the phase transformation pathway in a dynamic process.

Key words: phase transformation, time-resolved x-ray diffraction (XRD), bismuth, metastable phase, nonequilibrium phase diagram

中图分类号: 

  • 64.70.K-
64.60.My (Metastable phases) 62.50.Ef (Shock wave effects in solids and liquids)