熔体保温和超声振动对Al-Cu-Mn合金组织与性能的协同作用
Effects of Melt Holding and Ultrasonic Vibration on the Micro structure and Mechanical Properties of Al-Cu-Mn Alloy
张天阳 1方晓刚 1原紫云 1张迪 1黄中月 1严峰 2祖方遒1
作者信息
- 1. 合肥工业大学材料科学与工程学院,安徽合肥 230009;高性能铜合金材料及成形加工教育部工程研究中心,安徽合肥 230009
- 2. 安徽省合工岐铭新材料科技发展有限公司,安徽合肥 230031
- 折叠
摘要
含特定Cu/Mn比的铝合金能够形成稳定的二十面体准晶相(I-Al65Cu20Mn15),但是在常规凝固组织中准晶含量较低且尺寸粗大.本文以Al-Cu-Mn准晶合金为研究对象,研究在准晶I相形成温度区间进行熔体保温和超声振动对I相形貌与尺寸的影响规律.结果表明,随着熔体保温时间的延长,准晶I相尺寸呈先减小后增大的趋势,特别是保温时间为20 min时,准晶颗粒呈细小的花瓣状;对保温20 min后的合金熔体施加600 W功率的超声振动,准晶尺寸发生细化,但继续增大功率会导致I相粗化.
Abstract
Alloys with specific Cu/Mn ratios are capable of forming a stable icosahedral quasicrystal phase(I-Al65Cu20Mn15),but under conventional solidification conditions,it is difficult to form a large number of quasicrystal grainswith coarse sizes.This work focused on the study of Al-Cu-Mn quasicrystal alloy,investigating the quasicrystal formation rules through melt holding and ultrasonic vibration in the temperature range of quasicrystal I-phase.The results indicated that with the extension of the melt holding time,the size of the quasicrystal I-phase showed a trend of first decreasing and then increasing,especially when the melt holding time was 20 min,the quasicrystal particles exhibited a fine petal-like shape.Applying 600 W power ultrasonic vibration to the alloy melt after 20 min of meltholding refined the quasicrystal size,but increasing the power further caused coarsening of the I-phase.
关键词
Al-Cu-Mn合金/Al65Cu20Mn15准晶/熔体保温/超声振动Key words
Al-Cu-Mn alloy/Al65Cu20Mn15 quasicrystal/melt holding treatment/ultrasonic vibration引用本文复制引用
基金项目
安徽省重点研究与开发计划项目(202304a05020028)
安徽省自然科学基金资助项目(2308085ME167)
中央高校基本科研业务费专项(PA2022GDGP0029)
出版年
2024
国家科技期刊平台
NSTL
万方数据