Reconsideration of Anelastic Relaxation Peaks in Pure Aluminium
SHANG Li-Yan, SHUI Jia-Peng, CAI Bin, CUI Ping
Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031
Reconsideration of Anelastic Relaxation Peaks in Pure Aluminium
SHANG Li-Yan;SHUI Jia-Peng;CAI Bin;CUI Ping
Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031
关键词 ：
62.40.+i ,
81.40.Jj ,
61.72.Mm
Abstract ： The temperature dependence of internal friction (T-tan ψ curves) in pure aluminium (Al) is measured at sixteen different frequencies. Based on T-tan ψ curves, the frequency dependence of internal friction (f-tan ψ curves) is also obtained by the interpolation method. An internal friction peak is observed in both the T-tan ψ curves and the f-tan ψ curves. The activation energy of the peak in the f-tan ψ curves is found to be 2.08 ± 0.02eV and compared to the value of 1.60 ± 0.04eV in the T-tan ψ curves. It is suggested that the change of relaxation strength with temperature should be considered when one calculates the activation energy of the peak in T-tan ψ curves.
Key words ：
62.40.+i
81.40.Jj
61.72.Mm
出版日期: 2005-09-01
:
62.40.+i
(Anelasticity, internal friction, stress relaxation, and mechanical resonances)
81.40.Jj
(Elasticity and anelasticity, stress-strain relations)
61.72.Mm
(Grain and twin boundaries)
引用本文:
SHANG Li-Yan;SHUI Jia-Peng;CAI Bin;CUI Ping. Reconsideration of Anelastic Relaxation Peaks in Pure Aluminium[J]. 中国物理快报, 2005, 22(9): 2338-2341.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2005/V22/I9/2338
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