中国物理B ›› 2020, Vol. 29 ›› Issue (8): 86402-086402.doi: 10.1088/1674-1056/ab969c

• SPECIAL TOPIC—Ultracold atom and its application in precision measurement • 上一篇    下一篇

Thermal effects and evolution of the defect concentration based on shear modulus relaxation data in a Zr-based metallic glass

Qi Hao(郝奇), Ji-Chao Qiao(乔吉超), E V Goncharova, G V Afonin, Min-Na Liu(刘敏娜), Yi-Ting Cheng(程怡婷), V A Khonik   

  1. 1 School of Mechanics, Civil Engineering and Architecture, Northwestern Polytechnical University, Xi'an 710072, China;
    2 Department of General Physics, Voronezh State Pedagogical University, Lenin Street 86, Voronezh 394043, Russia
  • 收稿日期:2020-04-08 修回日期:2020-05-08 出版日期:2020-08-05 发布日期:2020-08-05
  • 通讯作者: Ji-Chao Qiao E-mail:qjczy@nwpu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant No. 51971178), the Astronautics Supporting Technology Foundation of China (Grant No. 2019-HT-XG), the Natural Science Foundation of Shaanxi Province, China (Grant No. 2019JM-344), the Russian Science Foundation (Grant No. 20-62-46003), and the Fundamental Research Funds for the Central Universities, China (Grant Nos. 3102019ghxm007 and 3102017JC01003).

Thermal effects and evolution of the defect concentration based on shear modulus relaxation data in a Zr-based metallic glass

Qi Hao(郝奇)1, Ji-Chao Qiao(乔吉超)1, E V Goncharova2, G V Afonin2, Min-Na Liu(刘敏娜)1, Yi-Ting Cheng(程怡婷)1, V A Khonik2   

  1. 1 School of Mechanics, Civil Engineering and Architecture, Northwestern Polytechnical University, Xi'an 710072, China;
    2 Department of General Physics, Voronezh State Pedagogical University, Lenin Street 86, Voronezh 394043, Russia
  • Received:2020-04-08 Revised:2020-05-08 Online:2020-08-05 Published:2020-08-05
  • Contact: Ji-Chao Qiao E-mail:qjczy@nwpu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant No. 51971178), the Astronautics Supporting Technology Foundation of China (Grant No. 2019-HT-XG), the Natural Science Foundation of Shaanxi Province, China (Grant No. 2019JM-344), the Russian Science Foundation (Grant No. 20-62-46003), and the Fundamental Research Funds for the Central Universities, China (Grant Nos. 3102019ghxm007 and 3102017JC01003).

摘要:

A relationship between thermal effects and relaxation of the high-frequency shear modulus upon heat treatment of bulk Zr48(Cu5/6Ag1/6)44Al8 metallic glass is found. This relationship is attributed to the relaxation of a interstitial-type defect system frozen-in from the melt upon glass production. Calorimetric data show that thermal effects occurring on heating include heat release below the glass transition temperature, heat absorption above it and heat release caused by crystallization. The equation derived within the Interstitialcy theory can be used to calculate the shear modulus relaxation using the calorimetric data. The obtained results are used to trace the defect concentration as functions of temperature and thermal prehistory.

关键词: shear modulus, metallic glass, structural relaxation, interstitialcy theory

Abstract:

A relationship between thermal effects and relaxation of the high-frequency shear modulus upon heat treatment of bulk Zr48(Cu5/6Ag1/6)44Al8 metallic glass is found. This relationship is attributed to the relaxation of a interstitial-type defect system frozen-in from the melt upon glass production. Calorimetric data show that thermal effects occurring on heating include heat release below the glass transition temperature, heat absorption above it and heat release caused by crystallization. The equation derived within the Interstitialcy theory can be used to calculate the shear modulus relaxation using the calorimetric data. The obtained results are used to trace the defect concentration as functions of temperature and thermal prehistory.

Key words: shear modulus, metallic glass, structural relaxation, interstitialcy theory

中图分类号:  (Metallic glasses)

  • 64.70.pe
07.20.Fw (Calorimeters) 61.43.Dq (Amorphous semiconductors, metals, and alloys)