Effect of Heat-Treatment on Damping Capacity of Ni-Ga-Fe-Co Ferromagnetic Shape Memory Alloy
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摘要: 采用低频扭摆仪研究了不同温度热处理(700和900 ℃)对Ni49Ga27Fe21Co3铁磁形状记忆合金阻尼性能的影响.结果表明:当应变振幅小于5.0×10-5时,铸态合金的阻尼性能主要取决于频率,当应变振幅大于5.0×10-5时主要取决于应变振幅;经热处理后合金中(Fe,Ni)固溶体发生分解并析出新相;经热处理后Ni49Ga27Fe21Co3合金的阻尼主要依赖于加载频率,且阻尼性能优于铸态合金的,最大阻尼值为0.023.Abstract: The effect of heat-treatment at different temperatures (700 ℃ and 900 ℃)on damping capacity of the Ni49Ga27Fe21Co3 ferromagnetic shape memory alloy (FSMA)was investigated by using low frequency torsion pendulum.The results show that when the strain amplitude was less than 5.0×10-5the damping capacity of the as-casted alloy was determined by frequency.Solid solution of (Fe,Ni)in the alloy decomposed and new phases precipitated during the heat-treatment.The damping capacity of the heat-treated Ni49Ga27Fe21Co3 alloy was determined by frequency and was superior to that of the as-casted alloy and the maximum value was 0.023.
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Keywords:
- heat-treatment /
- ferromagnetic shape memory alloy /
- damping capacity
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[1] WUTTIG M,LI J,CRACIUNESCU C.A new ferromagnetic shape memory alloy system[J].Scripta Materialia,2001,44:2393-2397. [2] DEARING N,JENNER A G.Magnetic and magnetoelastic properties of melt-spun Ni-Mn-Ga[J].IEEE Trans Magn,2006,42:78-80. [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. [4] FUJITA A,FUKAMICHI K,GEJIMA F,et al.Magnetic properties and large magnetic-field-induced strains in off-stoichiometric Ni-Mn-Al Heusler alloys[J].Applied Physics Letters,2000,77:3054-3056. [5] OIKAWA K,OTA T,SUTOU Y,et al.Magnetic and martensitic phase transformations in a Ni54Ga27Fe19 alloy[J].Materials Transactions,2002,43:2360-2362. [6] 夏明六,马立群,阮爱杰,等.铁磁性形状记忆合金Ni50Ga27Fe17Co6的阻尼性能[J].机械工程材料,2009,33(3):50-52. [7] 徐祖耀.相变内耗与伪滞弹性[J].金属学报,2003,39(11):1121-1126. [8] 石志强,李世春,刘宇慧.热循环频率对铸态Zn-Al合金相变超塑性的影响[J].石油大学学报:自然科学版,2004,28(3):39-43. [9] 冯端,王业宁,丘第荣.金属物理[M].北京:科学出版社,1975:603-608. [10] 李健靓,赵韦人,张羊换.熔体快淬对Ni-Mn-Ga合金马氏体相变特征及应变的影响[J].物理学报,2003,52(11):2849-2853.
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