中国物理B ›› 2017, Vol. 26 ›› Issue (1): 16402-016402.doi: 10.1088/1674-1056/26/1/016402

所属专题: TOPICAL REVIEW — Amorphous physics and materials

• TOPICAL REVIEW—Amorphous physics and materials • 上一篇    下一篇

Secondary relaxation and dynamic heterogeneity in metallic glasses: A brief review

J C Qiao(乔吉超), Q Wang, D Crespo, Y Yang(杨勇), J M Pelletier   

  1. 1. School of Mechanics, Civil Engineering and Architecture, Northwestern Polytechnical University, Xi'an 710072, China;
    2. Centre for Advanced Structural Materials, Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Kowloon Tong, Kowloon, Hong Kong, China;
    3. Universitéde Lyon, MATEIS, UMR CNRS5510, Bat. B. Pascal, INSA-Lyon, F-69621 Villeurbanne cedex, France;
    4. Key Laboratory for Structures, Institute of Materials Science, Shanghai University, Shanghai 200444, China;
    5. Departament de Física, EETAC, Universitat Politécnica de Catalunya, 08860-Castelldfels, Barcelona, Spain
  • 收稿日期:2016-09-17 修回日期:2016-11-22 出版日期:2017-01-05 发布日期:2017-01-05
  • 通讯作者: J C Qiao, J M Pelletier E-mail:qjczy@hotmail.com;jean-marc.pelletier@insa-lyon.fr
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 51401192 and 51611130120), the Natural Science Foundation of Shaanxi Province, China (Grant No. 2016JM5009), and the Fundamental Research Funds for the Central Universities of China (Grant Nos. 3102015ZY027 and 3102015BJ(II)JGZ019), the Aeronautical Science Foundation of China (Grant No. 2015ZF53072). J C Qiao is also supported by the Hong Kong Scholar Program of China (Grant No. XJ2015056). D Crespo thanks the support of MINECO (Grant No. FIS2014-54734-P) and Generalitat de Catalunya (Grant No. 2014SGR00581). Y Yang is supported by the Research Grant Council, the Hong Kong City of China, through the General Research Fund (Grant No. CityU11214914).

Secondary relaxation and dynamic heterogeneity in metallic glasses: A brief review

J C Qiao(乔吉超)1,2,3, Q Wang4, D Crespo5, Y Yang(杨勇)2, J M Pelletier3   

  1. 1. School of Mechanics, Civil Engineering and Architecture, Northwestern Polytechnical University, Xi'an 710072, China;
    2. Centre for Advanced Structural Materials, Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Kowloon Tong, Kowloon, Hong Kong, China;
    3. Universitéde Lyon, MATEIS, UMR CNRS5510, Bat. B. Pascal, INSA-Lyon, F-69621 Villeurbanne cedex, France;
    4. Key Laboratory for Structures, Institute of Materials Science, Shanghai University, Shanghai 200444, China;
    5. Departament de Física, EETAC, Universitat Politécnica de Catalunya, 08860-Castelldfels, Barcelona, Spain
  • Received:2016-09-17 Revised:2016-11-22 Online:2017-01-05 Published:2017-01-05
  • Contact: J C Qiao, J M Pelletier E-mail:qjczy@hotmail.com;jean-marc.pelletier@insa-lyon.fr
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 51401192 and 51611130120), the Natural Science Foundation of Shaanxi Province, China (Grant No. 2016JM5009), and the Fundamental Research Funds for the Central Universities of China (Grant Nos. 3102015ZY027 and 3102015BJ(II)JGZ019), the Aeronautical Science Foundation of China (Grant No. 2015ZF53072). J C Qiao is also supported by the Hong Kong Scholar Program of China (Grant No. XJ2015056). D Crespo thanks the support of MINECO (Grant No. FIS2014-54734-P) and Generalitat de Catalunya (Grant No. 2014SGR00581). Y Yang is supported by the Research Grant Council, the Hong Kong City of China, through the General Research Fund (Grant No. CityU11214914).

摘要:

Understanding mechanical relaxation, such as primary (α) and secondary (β) relaxation, is key to unravel the intertwined relation between the atomic dynamics and non-equilibrium thermodynamics in metallic glasses. At a fundamental level, relaxation, plastic deformation, glass transition, and crystallization of metallic glasses are intimately linked to each other, which can be related to atomic packing, inter-atomic diffusion, and cooperative atom movement. Conceptually, β relaxation is usually associated with structural heterogeneities intrinsic to metallic glasses. However, the details of such structural heterogeneities, being masked by the meta-stable disordered long-range structure, are yet to be understood. In this paper, we briefly review the recent experimental and simulation results that were attempted to elucidate structural heterogeneities in metallic glasses within the framework of β relaxation. In particular, we will discuss the correlation among β relaxation, structural heterogeneity, and mechanical properties of metallic glasses.

关键词: metallic glass, structural heterogeneity, mechanical property, secondary relaxation

Abstract:

Understanding mechanical relaxation, such as primary (α) and secondary (β) relaxation, is key to unravel the intertwined relation between the atomic dynamics and non-equilibrium thermodynamics in metallic glasses. At a fundamental level, relaxation, plastic deformation, glass transition, and crystallization of metallic glasses are intimately linked to each other, which can be related to atomic packing, inter-atomic diffusion, and cooperative atom movement. Conceptually, β relaxation is usually associated with structural heterogeneities intrinsic to metallic glasses. However, the details of such structural heterogeneities, being masked by the meta-stable disordered long-range structure, are yet to be understood. In this paper, we briefly review the recent experimental and simulation results that were attempted to elucidate structural heterogeneities in metallic glasses within the framework of β relaxation. In particular, we will discuss the correlation among β relaxation, structural heterogeneity, and mechanical properties of metallic glasses.

Key words: metallic glass, structural heterogeneity, mechanical property, secondary relaxation

中图分类号:  (Metallic glasses)

  • 64.70.pe
62.40.+i (Anelasticity, internal friction, stress relaxation, and mechanical resonances) 78.55.Qr (Amorphous materials; glasses and other disordered solids)