摘要
采用真空感应熔炼惰性气体吹铸方法,制备出了晶粒组织沿径向择优生长的φ3 mm Fe82Ga18合金棒材,沿轴向饱和磁致伸缩值达到92×10-6。系统研究了Fe82Ga18合金不同热处理方式下的相结构和磁致伸缩性能,通过对比退火前后合金的组织结构及性能发现,吹铸法制备的Fe82Ga18合金棒材,大的磁致伸缩性能缘自合金内部所具有的大量短程有序富Ga原子团簇,同时该合金沿〈110〉方向具有择优生长的趋势。
The φ3 mm Fe82Ga18 alloy rods with preferential grain growth along the radial direction were prepared by vacuum induction melting master alloy and copper mold blown cast under the protection of inert gas. The saturation magnetostriction value of the alloy along radial direction can reach 92 ×10^-6 The microstructure and magnetostriction properties of Fe-Ga alloys were systematically studied in the different heat-treatment conditions. The results show that the giant magnetostriction of Fe82Ga18 alloy can be attributed to the short range-order Ga atom cluster, and the preferential growth along 〈 1 10〉 direction.
出处
《铸造技术》
CAS
北大核心
2008年第12期1703-1707,共5页
Foundry Technology
