中国物理B ›› 2015, Vol. 24 ›› Issue (9): 93401-093401.doi: 10.1088/1674-1056/24/9/093401

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A universal function of creep rate

李菁田a, 荣曦明b, 王建录c, 张邦强c, 宁西京a   

  1. a Institute of Modern Physics, Department of Nuclear Science and Technology, Fudan University, Shanghai 200433, China;
    b Department of Optical Science and Engineer, Fudan University, Shanghai 200433, China;
    c Dongfang Turbine Co. Ltd., Deyang 618000, China
  • 收稿日期:2015-01-04 修回日期:2015-05-04 出版日期:2015-09-05 发布日期:2015-09-05
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11274073 and 51071048), the Shanghai Leading Academic Discipline Project, China (Grant No. B107), and the Key Discipline Innovative Training Program of Fudan University, China.

A universal function of creep rate

Li Jing-Tian (李菁田)a, Rong Xi-Ming (荣曦明)b, Wang Jian-Lu (王建录)c, Zhang Bang-Qiang (张邦强)c, Ning Xi-Jing (宁西京)a   

  1. a Institute of Modern Physics, Department of Nuclear Science and Technology, Fudan University, Shanghai 200433, China;
    b Department of Optical Science and Engineer, Fudan University, Shanghai 200433, China;
    c Dongfang Turbine Co. Ltd., Deyang 618000, China
  • Received:2015-01-04 Revised:2015-05-04 Online:2015-09-05 Published:2015-09-05
  • Contact: Ning Xi-Jing E-mail:xjning@fudan.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11274073 and 51071048), the Shanghai Leading Academic Discipline Project, China (Grant No. B107), and the Key Discipline Innovative Training Program of Fudan University, China.

摘要:

In this paper, we derive a universal function from a model based on statistical mechanics developed recently, and show that the function is well fitted to all the available experimental data which cannot be described by any function previously established. With the function predicting creep rate, it is unnecessary to consider which creep mechanism dominates the process, but only perform several experiments to determine the three constants in the function. It is expected that the new function would be widely used in industry in the future.

关键词: creep, statistical mechanics, metal and alloys

Abstract:

In this paper, we derive a universal function from a model based on statistical mechanics developed recently, and show that the function is well fitted to all the available experimental data which cannot be described by any function previously established. With the function predicting creep rate, it is unnecessary to consider which creep mechanism dominates the process, but only perform several experiments to determine the three constants in the function. It is expected that the new function would be widely used in industry in the future.

Key words: creep, statistical mechanics, metal and alloys

中图分类号:  (Interatomic potentials and forces)

  • 34.20.Cf
62.20.Hg (Creep) 81.05.Bx (Metals, semimetals, and alloys)