摘要
定向凝固TbDyFe合金具有[112]择优取向．热处理能明显地改变显微组织和磁致伸缩性能．在1100℃真空处理2h后，磁致伸缩性能最好；空冷和炉冷对磁致伸缩性能影响不大．富稀土相的球化和晶粒吞并长大，减小了磁化过程中90°磁畴转动的阻力，是高温处理提高磁致伸缩性能的根本原因．
The different technologies of heat treatment have been researched in a TbDyFe alloywith [112] preferred orientation. lt has been found that the annealing can influence the microstructureand magnetostriction in the TbDyFe alloy. We have got the optimum technology treated at 1100 ℃for 2h. Air cooling and furnace cooling have not obvious effet on the magnetotriction in the TbDyFealloy The sphericity of the rare earth and the crystal growth, which can decrease the resistance of thedomain rotation, is a basic reason for high-temperature-annealing to improve the magnetostriction inthe alloy.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
1998年第5期482-486,共5页
Chinese Journal of Materials Research
基金
"863"高科技资助
航空科学基金!97G51058
