大连理工大学学报2025，Vol.65Issue(2)：125-132,8.DOI:10.7511/dllgxb202502003
Fe-Ga合金磁致伸缩性能和力学性能优化
Optimization of magnetostrictive and mechanical properties of Fe-Ga alloys
摘要
Abstract
Fe83-xCoxGa17(x=0,0.4,0.8),Fe83AlxGa17-x(x=0,4,8)and(Fe83Ga17)100-xYx(x=0,0.4,0.8)alloys are designed by the addition of the third element to investigate the effects of the third element Co,Al and Y on the magnetostrictive and mechanical properties of the alloys.The experimental results show that Co atoms replace some Fe atoms in the body-centred cubic structure,forming a displacement solid solution with Fe-Ga matrix alloys,resulting in solid solution strengthening.But the enhancement in the magnetostrictive properties of the alloy is not significant.The addition of Al element significantly enhances the magnetostrictive properties of the alloy,in which the saturation magnetostrictive strain of Fe83Al8Ga9 alloy is 1.8×10-4.Combined with XRD phase analysis,it is found that it is related to the increase of A2 phase.The addition of Y element deteriorates the magnetostrictive properties of the alloy.When Y element content is 0.4％,the magnetostrictive strain is 0.8 × 10-4,and when Y element content is 0.8％,the magnetostrictive strain is 0.4× 10-4.Phase analysis of the alloy reveals that the decrease of the magnetostrictive strain is related to the generation of ordered phases.The hardnesses of Fe82.6Co0.4Ga17 and(Fe83Ga17)99.2Y0.8 alloys are about 10％higher than those of Fe83Ga17 alloy,and Fe33-xCoxGa17,Fe83AlxGa17-x,(Fe83Ga17)100-xYx alloys all exhibit excellent strength-plasticity combinations,with compressive yield strengths above 500 MPa,and compressive strain ratios above 60％.关键词
Fe-Ga合金/元素添加/磁致伸缩性能/力学性能Key words
Fe-Ga alloys/elemental addition/magnetostrictive property/mechanical property引用本文复制引用
李花,温嘉慧,苏凌宇,李杨,王海青,蒋丽..Fe-Ga合金磁致伸缩性能和力学性能优化[J].大连理工大学学报,2025,65(2):125-132,8.基金项目
国家自然科学基金资助项目(52171151). （52171151）
