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材料工程  2007, Vol. 0 Issue (11): 37-40,65    
  测试与表征 本期目录 | 过刊浏览 | 高级检索 |
Cu对Co41Ni33Al26合金马氏体相变和磁性转变的影响
罗丰华, 卢静, 陈明军, 孟康龙, 刘浪飞
中南大学, 粉末冶金国家重点实验室, 长沙, 410083
Influence of Cu on the Martensitic and Magnetic Properties of Co41Ni33Al26 Alloy
LUO Feng-hua, LU Jing, CHEN Ming-jun, MENG Kang-long, LIU Lang-fei
State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China
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摘要 采用金相显微技术、DSC、VSM方法,研究了Cu含量x(x=3,5,8)对Co41Ni33Al26合金马氏体相变和Curie点的影响。结果发现在x≤5%范围内,Co41Ni33-xAl26Cux合金马氏体相变温度与x的关系成直线变化,x每增加1%,马氏体相变温度降低约44K;其Curie点随x增加而缓慢下降,x每增加1%,Curie点约降低3.6K。与L10马氏体结构的Co41Ni33-xAl26Cux(x=0,3,5)合金相比,具有B2结构的Co41Ni25Al26Cu8合金易磁化,并且饱和磁化强度低。
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罗丰华
卢静
陈明军
孟康龙
刘浪飞
关键词 Co-Ni-Al-Cu合金马氏体相变Curie点    
Abstract:Co-Ni-Al alloy is a promising ferromagnetic shape memory alloy for its good workability.The influence of Cu concentration x(x=3,5,8) on the martensitic transformation temperature and Curie point of Co41Ni33Al26 alloys were investigated by optical Metallography,DSC and VSM methods.The results show that martensitic transformation temperatures of Co41Ni33-xAl26Cux alloys decrease quickly with the increasing of Cu concentration x.In the range of x≤5%,1% Cu substitute Ni can decrease the martensitic transition temperature by 44K for alloys quenched from 1623K.Whereas the influence of x on Curie point isn't so strong,the decreasing in Curie point is only 3.6K for 1% increasing of Cu element.Comparing to Co41Ni33-xAl26Cux(x=0,3,5) alloys with L10 martensitic crystal structure,Co41Ni25Al26Cu8 with B2 crystal structure is easy to be magnetized and has the lowest magnetization saturation.
Key wordsCo-Ni-Al-Cu alloy    martensitic transformation    Curie point
收稿日期: 2006-10-20      出版日期: 2007-11-20
1:  TG139.6  
作者简介: 罗丰华(1969- ),男,教授,工学博士,主攻金属材料,联系地址:中南大学粉末冶金研究院(410083).E-mail:fenghualuo@mail.csu.edu.cn
引用本文:   
罗丰华, 卢静, 陈明军, 孟康龙, 刘浪飞. Cu对Co41Ni33Al26合金马氏体相变和磁性转变的影响[J]. 材料工程, 2007, 0(11): 37-40,65.
LUO Feng-hua, LU Jing, CHEN Ming-jun, MENG Kang-long, LIU Lang-fei. Influence of Cu on the Martensitic and Magnetic Properties of Co41Ni33Al26 Alloy. Journal of Materials Engineering, 2007, 0(11): 37-40,65.
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http://jme.biam.ac.cn/CN/      或      http://jme.biam.ac.cn/CN/Y2007/V0/I11/37
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