CAJ | 학술논문

金属玻璃是一类具有结构和功能应用前景的新型金属材料，是目前物理和材料学科最为活跃的研究领域之一。由于处于热力学亚稳态，金属玻璃在合适的外界条件下会自发地向相应的晶态相发生转变，导致晶化事件的发生。研究金属玻璃的纳米晶化不仅有重要的科学意义，同时也可对金属玻璃的应用提供理论指导。简要介绍了目前几种代表性的金属玻璃纳米晶化微观机制：经典形核理论、基于耦合通量模型的形核机制、基于相分离的纳米晶形核长大机制、有序原子集团沉积机制、非经典形核理论、大过冷度条件下纳米晶化的微观机制等，同时结合作者课题组近年来在这方面的研究进展，对各种机制进行了评述，最后对未来金属玻璃纳米晶化机制研究中需要重视的几个问题进行了简单展望。
금속파리시일류구유결구화공능응용전경적신형금속재료，시목전물리화재료학과최위활약적연구영역지일。유우처우열역학아은태，금속파리재합괄적외계조건하회자발지향상응적정태상발생전변，도치정화사건적발생。연구금속파리적납미정화불부유중요적과학의의，동시야가대금속파리적응용제공이론지도。간요개소료목전궤충대표성적금속파리납미정화미관궤제：경전형핵이론、기우우합통량모형적형핵궤제、기우상분리적납미정형핵장대궤제、유서원자집단침적궤제、비경전형핵이론、대과랭도조건하납미정화적미관궤제등，동시결합작자과제조근년래재저방면적연구진전，대각충궤제진행료평술，최후대미래금속파리납미정화궤제연구중수요중시적궤개문제진행료간단전망。
Metallic glasses,as a new class of metallic materials with potential applications in structural and functional aspects,are one of the hottest topics in the field of physics and materials science.Since they are metastable thermodynam-ically,metallic glasses always transform into their crystalline counterparts spontaneously under some suitable conditions, leading to the occurrence of crystallization event.The research on nanocrystallization of metallic glasses not only is of sci-entific importance,but also offers theoretical guidance for applications of these materials.In this paper,we give a brief re-view of several representative micromechanisms for nanocrystallization of metallic glasses,including classical nucleation theory,nucleation mechanism based on the linked-flux model,nucleation and growth mechanism associated with phase separation,cluster deposition micromechanism,non-classical nucleation theory,and nanocrystallization micromechanism under a larger undercooling.Moreover,our recent progress in understanding the atomistic mechanism for nanocrystalliza-tion of metallic glasses is also reviewed.Finally,we point out a couple of issues that deserve further investigation to fully understand nanocrystallization behaviors of metallic glasses.