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.
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.