J. Mater. Sci. Technol. ›› 2022, Vol. 108: 73-81.DOI: 10.1016/j.jmst.2021.08.046

• Research Article • Previous Articles     Next Articles

Atomic-scale Nb heterogeneity induced icosahedral short-range ordering in metallic glasses

Yuhui Zhua,b,c, Weizhen Wangd, Yuanyuan Songc, Shiming Zhange, Hong Lia,c, Aimin Wanga,c, Haifeng Zhanga,c, Zhengwang Zhua,c,*()   

  1. aShi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
    bSchool of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
    cCAS Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
    dShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
    eQingdao Yunlu Advanced Materials Technology Co., Ltd., Qingdao 266232, China
  • Received:2021-05-13 Revised:2021-06-28 Accepted:2021-08-16 Published:2021-10-20 Online:2021-10-20
  • Contact: Zhengwang Zhu
  • About author:* E-mail address: zwzhu@imr.ac.cn (Z. Zhu).

Abstract:

The intrinsic origins and formation of atomic-scale structure in multicomponent alloys remain largely unknown owing to limited simulations and inaccessible experiments. Herein, we report the formation of three-dimensional periodicity from a disordered atomic-scale structure to an imperfect/perfect ordered cluster and finally to long-range translational and rotational symmetry coupled with Nb heterogeneity. Significant atomic-scale structural clustering and atomic arrangements involving solvent or solute atoms simultaneously occurred during isothermal annealing. A close relationship between atomic-scale structural evolution and composition variation has important implications in depicting the chemical and topological packing during the early crystallization stage in metallic glasses. This work can provide a comprehensive understanding of how short-range orders evolve into long-range periodicity and will further shed light on the origins and nature of metallic glasses.

Key words: Metallic glasses, Isothermal annealing, Atomic-scale, Structural ordering, Nb heterogeneity