晶粒取向镍—铁合金各向异性的磁转矩法研究

本文测定了冷轧的及冷轧后又经不同温度退火的50％Ni-50％Fe合金的磁转矩曲线,从而对试样中的冷轧及再结晶结构作了推断。从具有完整立方结构的试样上测得的磁晶各向异性常数k₁和其他作者从单晶体上得到的值相近,而从保有冷轧结构的试样定得的k₁值则较大。考察了影响k₁测定值的可能因素;讨论了磁致伸缩各向异性导致的弹性能以及有序程度对k₁值的影响。 关键词：

MAGNETIC TORQUE STUDIES OF THE ANISOTROPY OF A GRAIN ORIENTED NICKEL-IRON ALLOY

The magnetic anisotropy of a 50% Ni-50% Fe alloy, after (1) cold reduction and (2) cold reduction and annealing at various temperatures, has been determined from magnetic torque curves, from which the types of the rolling and recrystallization textures in the specimens have been deduced. In the specimens with perfect cube texture, the magnetic anisotropy constant k₁ has been determined; the result is consistent with that of other authors' using single crystal specimens. The k₁ value in the cold rolled specimens is, however, larger. The factors which may possibly influence the determined k₁ values are considered; the influences due to the degree of ordering and the elastic energy induced by anisotropic magnetostriction are finally discussed.