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高阻尼TNCH合金的相变与阻尼性能研究

Yuan-yuan LUO,Yong-qing ZHAO,Zhi-min HOU,Qian LI,Huan WU

Gongneng Cailiao/Journal of Functional Materials（2010）

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Abstract
研究了新型阻尼合金的马氏体相变、内耗以及它们之间的关系.结果表明,在室温低频范围内合金主要经历了3个阶段:低温马氏体状态,两相共存状态与母相状态.低温马氏体时,TNCH合金的高阻尼主要由B19′马氏体变体、孪晶界面产生.相变过程中的阻尼特性与相变时新相/旧相的相界面数量有关.合金处于母相时其阻尼主要来源于合金的晶体缺陷.
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Key words
Frequency,Internal friction,Martensitic transformation,Strain amplitude
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