| 偏应力技术在非线性内耗中的应用SCIEI |
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| 引用本文： | 谭启. 偏应力技术在非线性内耗中的应用SCIEI[J]. 金属学报, 1991, 27(6): 21-26 |
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| 作者姓名： | 谭启 |
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| 作者单位： | 中国科学技术大学内耗与固体缺陷开放研究实验室 讲师 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 本文研究了纵向偏应力和切向偏应力对反常内耗效应的影响.纵向偏应力总是削弱反常内耗效应,而切向偏应力因施加方向的不同引起不同的内耗效应.偏应力效应在经过适当热处理和冷加工的合金试样中才体现出来.研究表明反常内耗峰(_3,P_2和P_1峰)与倾斜的位错弯结链密切相关。偏应力对内耗的应用将有助于位错结构的研究。
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| 关 键 词： | 非线性 内耗 偏应力 铝合金 位错 |
| 收稿时间： | 1991-06-18 |
| 修稿时间： | 1991-06-18 |
EFFECT OF BIAS STRESS ON NON-LINEAR INTERNAL FRICTION OF Al-Mg ALLOY |
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| TAN Qi Laboratory of Internal Friction and Defects in Solids,University of Science and Technology of China,Hefei. EFFECT OF BIAS STRESS ON NON-LINEAR INTERNAL FRICTION OF Al-Mg ALLOY[J]. Acta Metallurgica Sinica, 1991, 27(6): 21-26 |
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| Authors: | TAN Qi Laboratory of Internal Friction Defects in Solids University of Science Technology of China Hefei |
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| Abstract: | The influence of longitudinal and torsional bias stresses on anomalous amplitude-dependent internal friction was studied. The longitudinal bias stress may always weaken the anomalous amplitude-dependent effect, while the torsional one may induce different effects from different directions applied. Bias stress effect exhibits only in such alloy undergone proper heat treatment or cold working. The anomalous amplitude-dependent internal friction peaks, P_3, P_2 and P_1, are found to be related closely to slant dislocation kink chains. Thus, the application of bias stress to internal friction would be contributed to studying dislocation structure. |
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| Keywords: | internal friction bias stress anomalous amplitude effect dislocation kink |
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