时效时间对埃林瓦合金负△E效应影响

Influence of Ageing Time on the Negative △E Effect in Elin var Alloy

研究在交流磁场作用下时效时间对Ｆｅ－Ｎｉ－Ｃｒ－Ｔｉ弥散硬化埃林瓦合金负△Ｅ效应及内耗Ｑ－１的影响．结果表明：合金时效后，在交流磁场作用下出现负△Ｅ效应，而且比直流磁场下的负△Ｅ效应范围宽．时效时间增加，合金的连续减小，所对应的交流磁场增加．这与团溶体的分解及γ′相对畴壁的钉扎作用密切相关．

The influence of ageing time on the negative △E effect and internal friction Q-1 of Fe-Ni-Cr-Tidispersion hardened Elinvar alloy in AC magnetic field was studied. The results showed that a negative dEeffect occurs in the field after ageing and that the 6E effect is of wider extent than that in DC magnetic field.Accompanied with the increasing ageing time, Elinvar's and oaf decrease but the correspondingAC magnetic field increases. The fact relates closely to the decomposition of solid solution and the nailing eff fect of γ phase to domain walls.