张程,黄进峰,沈玉萍,方前锋,水嘉鹏,张济山,李书开

• 1:北京科技大学新金属材料国家重点实验室
• 2:中国科学院固体物理研究所内耗与固体缺陷开放研究实验室

摘要(Abstract)：

通过真空感应熔炼、锻造及热处理等工艺,制备了Fe-17 mass%Mn减振合金,采用热膨胀法测量材料的相变点,并进行组织观察和分析。在不同温度和应变条件下,测试了材料的阻尼性能,并分析其振幅内耗效应。结果表明,实验合金在低温低应变振幅下表现出反常振幅效应,在高温高应变振幅下出现振幅内耗峰。由于溶质原子在不同温度下的动性不同,位错在不同振幅下的运动速度不同,以及溶质原子和位错线之间的"跟、拖、甩"作用等,可将G-L模型中的钉扎点看成可动的,来解释此情况。

关键词(KeyWords)： Fe-Mn合金;内耗;减振;位错

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 张程,黄进峰,沈玉萍,方前锋,水嘉鹏,张济山,李书开

DOI: 10.13289/j.issn.1009-6264.2016.01.002

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