Mechanism of Amplitude-Dependent Internal Friction in Metals

金属中与振幅相关的内部摩擦机制

• 批准号: 59460167
• 负责人: ASANO Shigeru
• 金额: $ 5.31万
• 依托单位: Nagoya Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1984
• 资助国家: 日本
• 起止时间: 1984 至 1985
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-59460167/
• 关键词: Internal Friction; Amplitude Dependence; Frequency Dependence; Forced Vibration Method Dislocation; Relaxation; snoek Peak; スネークピーク; 水素ピーク

The conventional method of data analysis on internal friction was criticized in detail, and its scope and limitation were explicitly indicated. Instead of usual data on the temperature dependence of internal friction, the amplitude and frequency dependence of internal friction was analysed on the basis of phenomenological theory. The results obtaind are summarized as follows:(1) In the general case of inhomogeneous deformation of specimens, the measured value of amplitude-dependent internal friction was expressed in terms of not only physical properties of the material but also experimental conditions of the apparatus.(2) For metals and alloys, internal friction cused by dislocation motion was formulated as a function of amplitude and frequency. A remarkable difference in theoretical expression was demonstrated between low and high temperatures(3) The frequency dependence of internal friction was measured below room temperature by the forced vibration method. The carbon Snoek peak was detected in iron at bout 260 K, and the hydrogen relaxation peak was detected in Invar alloy at about 170 K.

对传统的内摩擦数据分析方法进行了详细的批评，并明确指出了其适用范围和局限性。用现象学理论分析了内摩擦的振幅和频率依赖性，而不是通常的内摩擦温度依赖性数据。结果表明：(1)在一般试件不均匀变形情况下，幅值内摩擦的测量值既要考虑材料的物理性质，又要考虑装置的实验条件。(2)对于金属和合金，由位错运动引起的内摩擦被表述为振幅和频率的函数。(3)在室温下用强迫振动法测量了内摩擦的频率依赖性。铁在约260 K时出现了碳的Snoek峰，因瓦尔合金在约170 K时出现了氢的弛豫峰。

项目成果

Ken-ichiro ISHII: "Amplitube-Dependent Internal Friction Due to Dislocations Oscillating in the Lattice" Proceedings of 1st Conf. on Internal Friction, held in China. 1-10 (1984)

Ken-ichiro ISHII：“晶格中位错振荡导致的与放大器相关的内部摩擦”第一届会议论文集。

Satoshi TAMAOKA and Shigeru ASANO: "The Frequency Dependence of Internal Friction in Hydrogen-Charged Fe-36%Ni Invar Alloy" Journal of Japan Institute of Metals. 51. 383-384 (1987)

Satoshi%20TAMAOKA%20and%20Shigeru%20ASANO:%20"The%20Frequency%20Dependence%20of%20Internal%20Friction%20in%20Hydrogen-Charged%20Fe-36%Ni%20Invar%20Alloy"%20Journal%20of%20Japan%20Institute%

Ken-ichii: Journal de Physique. 46. C10-191-194 (1985)

Ken-ichii：《体质杂志》。

玉岡 悟司,浅野 滋: 日本金属学会誌. 51. 383-384 (1987)

Satoshi Tamaoka，Shigeru Asano：日本金属学会杂志 51. 383-384 (1987)。

Ken-ishii: 第一届全国内粍学術会議・講演録,合肥(中国). 1-10 (1984)

Ken-ishii：第一届全国医学科学学术会议论文集，合肥（中国）1-10（1984）。