摘要
非晶/玻璃等非平衡态材料会自发向低能量状态转变,称为老化或弛豫,表现出非指数的演化特征.人们认为非晶/玻璃的非指数弛豫是由不同的局域弛豫谱叠加而来.然而,关于非指数弛豫的起源仍不清晰.这篇综述简要介绍了非晶合金等温弛豫行为,探测到符合Debye方程的弛豫基本单元——弛豫子,且不同弛豫子相互作用会激活记忆效应.“弛豫子”概念的提出为理解非平衡态材料的物理本质、编程式设计等温退火工艺以及精准调控其性能具有重要意义.
Amorphous or glassy systems will relax toward a low energy state,namely“aging or relaxation”,which exhibits a nonexponential character.Generally,the non-exponential relaxation peaks are composed of a series of local relaxation events.However,the physical description of non-exponential relaxation is still not clear.This article introduces the isothermal annealing behaviors of amorphous alloys.The relaxation units(relaxun),which obey the Debye equation,were detected,and the interaction of different relaxuns can activate the memory effect.The concept“relaxun”is of great significance for understanding the physical nature of non-equilibrium materials,controlling isothermal annealing processes and precisely modulating the properties of amorphous materials.
作者
宋丽建
童钰
许巍
高萌
张岩
霍军涛
王军强
SONG LiJian;TONG Yu;XU Wei;GAO Meng;ZHANG Yan;HUO JunTao;WANG Jun-Qiang(CAS Key Laboratory of Magnetic Materials and Devices,and Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology,Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China)
出处
《中国科学:物理学、力学、天文学》
北大核心
2025年第8期17-27,共11页
Scientia Sinica Physica,Mechanica & Astronomica
基金
国家自然科学基金(编号:52231006,92163108,52271158)
浙江省自然科学基金(编号:LGF22E010002,LZ22A030001,LR22E010004)
浙江省“尖兵”“领雁”研发攻关计划(编号:2022C01023)
宁波市“科技创新2025”重大专项(编号:2022Z033)资助项目。
关键词
非晶合金
弛豫子
记忆效应
amorphous alloys
relaxun
memory effect
