挤压及退火对Fe-Ga-Al-Dy合金组织结构和性能的影响
Effect of squeezing and annealing on the structure and properties of Fe-Ga-Al-Dy alloy
焦佩英 1龚沛 1王玉成1
作者信息
- 1. 内蒙古工业大学材料科学工程学院,内蒙古 呼和浩特 010051
- 折叠
摘要
采用非自耗真空电弧炉制备铸态(Fe81Ga15.8Al3.2)100-xDyx(x=0～0.6)合金,利用锻压机对铸锭进行挤压退火处理.通过组织形貌观察、相结构分析、磁致伸缩性能和硬度测量,研究挤压退火工艺对合金相结构和磁致伸缩性能的影响.结果表明,相对于铸态合金,挤压退火处理合金的相结构由A2相转变为A2和D03复合相结构.同时,挤压退火处理后合金的磁致伸缩性能下降.当x=0.5时,合金的磁致伸缩性能变化最显著,降低了57.1%.这是因为挤压退火处理增强了合金的<211>取向,从而降低了合金的磁致伸缩性能.当x=0.1时,合金的洛氏硬度值最大,挤压退火处理后合金的硬度值从30.1 HRC增加到38.3 HRC.
Abstract
The as cast(Fe81Ga15.8Al3.2)100-xDyx(x=0-0.6)alloy was prepared using a non consumable vacuum arc furnace,and the ingots were subjected to extrusion annealing treatment using a forging machine.By observing the microstructure,analyzing the phase structure,measuring the magnetostrictive properties and hardness,the effect of extrusion annealing process on the phase structure and magnetostrictive properties of the alloy was studied.The results indicate that compared with the as cast alloy,the phase structure of the extruded annealing treated alloy changes from A2 phase to A2 and D03 composite phase structure.Meanwhile,the magnetostrictive properties of the alloy treated with extrusion annealing decreased.When x=0.5,the magnetostrictive performance of the alloy changes most significantly,decreasing by 57.1%.This is because the extrusion annealing treatment enhances the<211>orientation of the alloy,thereby reducing the magnetostrictive properties of the alloy.When x=0.1,the rockwell hardness value of the alloy is the highest,and after extrusion annealing,the hardness value of the alloy increases from 30.1 HRC to 38.3 HRC.
关键词
Fe-Ga-Al-Dy合金/挤压退火/相结构/磁致伸缩Key words
Fe-Ga-Al-Dy alloy/squeeze annealing/phase structure/magnetostriction引用本文复制引用
出版年
2024
NETL
NSTL
万方数据