中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 33 No. 10 October 2023 |
（1. State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;
2. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China;
3. Research Institute of Huazhong University of Science and Technology in Shenzhen, Shenzhen 518057, China）
Abstract:Recent researches have shown that metallic glasses (MGs) can be rejuvenated to a more metastable energy state by thermal or mechanical approaches, which causes a looser atomic packing. This process can effectively improve the overall plasticity of MGs. The present work started with the concept of ageing and rejuvenation of MGs, briefly introducing the probable methods to rejuvenate the MGs, then the advantages and disadvantages of various methods were summarized, and the effects of deep cryogenic cycling method (a non-destructive method to sample morphology and feasible to conduct) were investigated in detail. The effects of treating parameters on the degree of rejuvenation and the effects of rejuvenation on the mechanical and magnetic properties of MGs were also summarized. Finally, some conclusions in this field are drawn and some important questions that deserve further study are put forward.
Key words: metallic glass; rejuvenation; deep cryogenic cycling; relaxation enthalpy; plasticity
