时效对Ni53Ga27Fe15Co5铁磁形状记忆合金阻尼性能的影响夏明六,马立群,程江辉,丁 毅
Effect of Ageing on Damping Capacities of Ni53Ga27Fe15Co5 Ferromagnetic Shape Memory Alloy
摘 要
采用低频扭摆仪研究了时效对Ni53Ga27Fe15Co5铁磁形状记忆合金阻尼性能的影响.结果表明:时效前后,当应变振幅小于4.0×10-5时,该合金的阻尼性能都依赖于频率,当应变振幅大于4.0×10-5时都取决于应变振幅;经700 ℃时效4 h后该合金的马氏体相变温度降低,逆相变温度升高,相变潜热减小,其阻尼性能约为铸态时的两倍,最大阻尼值达0.139.
铁磁形状记忆合金
阻尼性能
ageing
ferromagnetic shape memory alloy
damping capacity
Abstract
The effect of ageing on damping capacities of the Ni53Ga27Fe15Co5 ferromagnetic shape memory alloy (FSMA) was investigated by using low frequency torsion pendulum.The results show that when the strain amplitude was less than 4.0×10-5,the damping capacities of the Ni53Ga27Fe15Co5 alloy were determined by frequency,when the strain amplitude was more than 4.0×10-5 those were controlled by strain amplitude before and after ageing.Martensitic transformation temperature decreased,the converse transformation temperature increased and latent heat of phase transition was reduced of the Ni53Ga27Fe15Co5 alloy after ageing at 700 ℃ for 4 h,the damping capacities of the ageing alloy were twice larger than those of the as-cast alloy.The maximum damping capacities reached 0.139.
中图分类号 TG113 TG135.7 TG146.15
所属栏目 试验研究
基金项目
收稿日期 2009/5/19
修改稿日期 2010/2/20
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备注夏明六(1982-),男,安徽巢湖人,硕士研究生.
引用该论文: XIA Ming-liu,MA Li-qun,CHENG Jiang-hui,DING Yi. Effect of Ageing on Damping Capacities of Ni53Ga27Fe15Co5 Ferromagnetic Shape Memory Alloy[J]. Materials for mechancial engineering, 2010, 34(6): 43～46
夏明六,马立群,程江辉,丁毅. 时效对Ni53Ga27Fe15Co5铁磁形状记忆合金阻尼性能的影响夏明六,马立群,程江辉,丁 毅[J]. 机械工程材料, 2010, 34(6): 43～46
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【3】CHERNENKO V A,PONS J,CESARI E,et al.Transformation behaviour and martensite stabilization in the ferromagnetic Co-Ni-Ga Heusler alloy[J].Scripta Materialia,2004,50:225-229.
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