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

作　　者：Yuhui Zhu Weizhen Wang Yuanyuan Song Shiming Zhang Hong Li Aimin Wang Haifeng Zhang Zhengwang Zhu 

机构地区：[1]Shi-changxu Innovation Center for Advanced Materials,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China [2]School of Materials Science and Engineering,University of Science and Technology of China,Hefei 230026,China [3]CAS Key Laboratory of Nuclear Materials and Safety Assessment,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China [4]Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China [5]Qingdao Yunlu Advanced Materials Technology Co.,Ltd.,Qingdao 266232,China

出　　处：《Journal of Materials Science & Technology》2022年第13期73-81,共9页材料科学技术（英文版）

基　　金：the financial support from the National Natural Science Foundation of China(Grant Nos.52074257 and 51790484);the Chinese Academy of Sciences(Grant No.ZDBSLY-JSC023);the Liao Ning Revitalization Talents Program(Grant Nos.XLYC1802078 and XLYC1807062);the fund of Qingdao(Grant No.19-9-2-1-wz)。

摘　　要：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.

关 键 词：Metallic glasses Isothermal annealing ATOMIC-SCALE Structural ordering Nb heterogeneity 

分 类 号：TG139.8[一般工业技术—材料科学与工程]