Abstract

A (Fe_83.4Ga_16.6)_99.9(NbC)_0.1 alloy was used to investigate the effect of thermomechanical treatment on the texture formation and magnetostriction. The main idea was to develop the Goss and cube texture after rolling and primary recrystallization, without secondary one, in order to enhance the magnetostriction strain. Rolling at elevated temperature was used to produce thin sheets; total degree of deformation was 83%. As a result, heterogeneous texture of deformation with a significant amount of orientations with 〈100〉 directions along the rolling direction was created. Subsequent primary recrystallization was initialized by annealing at different temperatures: 900, 950, and 1000°C. The texture evolution was studied by EBSD technique. The texture, residual stress level, and parallel magnetostriction were studied in the samples after recrystallization. By applying high temperature annealing, the magnetostriction is increased. The maximal magnetostriction strain is obtained after annealing for 2 h at 1000°C. An increase in magnetostriction caused by the texture change and a decrease in the internal stresses were shown.

中文翻译：

---

温轧再结晶 Fe-Ga 合金的织构和磁致伸缩

摘要

A (Fe _83.4 Ga _16.6 ) _99.9 (NbC) _0.1合金用于研究热机械处理对织构形成和磁致伸缩的影响。主要思想是在轧制和一次再结晶后形成高斯和立方织构，没有二次再结晶，以增强磁致伸缩应变。高温轧制用于生产薄板；总变形度为83%。结果，在轧制方向上产生了具有<100>方向的大量取向的异质变形织构。随后的初次再结晶通过在不同温度下退火进行初始化：900、950 和 1000°C。通过EBSD技术研究了织构演变。研究了再结晶后样品的织构、残余应力水平和平行磁致伸缩。通过应用高温退火，磁致伸缩增加。在 1000°C 下退火 2 小时后获得最大磁致伸缩应变。显示了由织构变化引起的磁致伸缩的增加和内应力的减少。