Ultra-fast amorphization of crystalline alloys by ultrasonic vibrations  

作　　者：Luyao Li Guo-Jian Lyu Hongzhen Li Caitao Fan Wenxin Wen Hongji Lin Bo Huang Sajad Sohrabi Shuai Ren Xiong Liang Yun-Jiang Wang Jiang Ma Weihua Wang 

机构地区：[1]Guangdong Key Laboratory of Electromagnetic Control and Intelligent Robots,Shenzhen University,Shenzhen 518060,China [2]State Key Laboratory of Nonlinear Mechanics,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China [3]National Engineering Research Center of Near-net-shape Forming for Metallic Materials,South China University of Technology,Guangzhou 510640,China [4]Institute of Materials,School of Materials Science and Engineering,Shanghai University,Shanghai 200444,China [5]School of Engineering Science,University of Chinese Academy of Sciences,Beijing 101408,China [6]Songshan Lake Materials Laboratory,Dongguan 523808,China [7]Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China

出　　处：《Journal of Materials Science & Technology》2023年第11期76-88,共13页材料科学技术（英文版）

基　　金：financially supported by the Key Basic and Applied Research Program of Guangdong Province,China(No.2019B030302010);the National Natural Science Foundation of China(Nos.52122105,51971150,51871157);the National Key Research and Development Program of China(No.2018YFA0703605);the financial support from the National Natural Science Foundation of China(No.12072344);the Youth Innovation Promotion Association of the Chinese Academy of Sciences;supported by the Beijing Electron Positron Collider(BEPC)project(No.2020-BEPC-PT-004661).

摘　　要：The amorphization of alloys is of both broad scientific interests and engineering significance.Despite considered as an efficient strategy to regulate and even achieve record-breaking properties of metallic materials,a facile and rapid method to trigger solid-state amorphization is still being pursued.Here we report such a method to utilize ultrasonic vibration to trigger amorphization of intermetallic compound.The ultrasonic vibrations can cause tunable amorphization at room temperature and low stress(2 MPa)conveniently.Remarkably,the ultrasonic-induced amorphization could be achieved in 60 s,which is 360 times faster than the ball milling(2.16×10^(4) s)with the similar proportion of amorphization.The elements redistribute uniformly and rapidly via the activated short-circuit diffusion.Both experimental evidences and simulations show that the amorphous phase initiates and expands at nanograin boundaries,owing to the induction of lattice instability.This work provides a groundbreaking strategy for developing novel materials with tunable structures and properties.

关 键 词：Amorphization Ultrasonic vibration Lattice instability Elemental diffusion 

分 类 号：TB33[一般工业技术—材料科学与工程]