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金属学报  1994, Vol. 30 Issue (5): 210-216    
  论文 本期目录 | 过刊浏览 |
Fe-Nb-C合金的高温内耗
戢景文;孙玉杰;刘艳美
东北大学
HIGH TEMPERATURE INTERNAL FRICTION FOR Fe-Nb-C ALLOYS
JI Jingwen;SUN Yujie;LIU Yanmei(Northeastern University; Shenyang)(Manuscript received 7 September; 1993; in revised form 10 December;1993)
引用本文:

戢景文;孙玉杰;刘艳美. Fe-Nb-C合金的高温内耗[J]. 金属学报, 1994, 30(5): 210-216.
, , . HIGH TEMPERATURE INTERNAL FRICTION FOR Fe-Nb-C ALLOYS[J]. Acta Metall Sin, 1994, 30(5): 210-216.

全文: PDF(505 KB)  
摘要: 测量了高纯Fe-Nb-C合金的400-850℃内耗,发现一个峰温度随测量应变振幅变化的高温(666-740℃)磁机械滞后阻尼内耗峰。研究了峰的特征、出现、消失条件及升降温、频率、振幅、变形与退火等因素对峰的影响.提出了用内耗实验确定材料中阻碍铁磁畴壁Barkhausen跳动应力的方法和合金中产生磁机械滞后阻尼-温度峰(Q_m~(-1)-T)的物理机制。
关键词 内耗Fe-Nb-C合金    
Abstract:The internal friction at 400-850℃ in high-pure Fe-Nb-C alloys has been measured, and a large stress-dependent magnetomechanical hysteresis damping peak of which the peak temperature varies from 666 to 740℃ as strain amplitude changes was discovered. The conditions of the peak appearing and disappearing, some characters of the peak and the effect of some factors such as ascending and descending temperature, frequency,amplitude, defoimation and annealing etc. on the peak have also been studied. The method to determine the internal stress σst and σi obstructing Barkhausen jumps of domains by internal friction experiment and the physical mechanism producing the magnetomechanical hysteresis damping-temperaturepeak in the alloy were proposed. Correspondent: JI Jingwen,Department of Physics, Northeastern University, Shenyang 110006
Key words internal friction    Fe-Nb-C alloy.
收稿日期: 1994-05-18     
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