固溶处理对超高Zn含量7系铝合金组织与性能的影响
Effect of Solution Treatment on Mechanical Properties and Microstructure of Series 7 Aluminum Alloy with Ultra-high Zn Content
田文明 1乐杨 1张志坤 1高硕1
作者信息
- 1. 北华航天工业学院材料工程学院,河北廊坊 065000
- 折叠
摘要
本研究利用气雾化法制备微米级超高Zn含量(质量分数25％)铝合金粉末,再通过放电等离子烧结(SPS)可制备出富Zn增强相细小弥散的块体合金,最后经过固溶-自然时效热处理可进一步优化合金增强相的种类、尺寸及分布,在固溶温度400℃时,固溶-自然时效后的超高Zn含量铝合金的抗拉强度可达540MPa,断裂伸长率为5.3％,气雾化-SPS烧结-固溶时效的工艺路线为超高Zn含量7系铝合金的制备提供了新的思路.
Abstract
Microns ultra-high Zn content(25％mass fraction)aluminum alloy powders were prepared by aerosol atomization in this experiment.Then the bulk high Zn content aluminum alloy with Fine and well-distributed secondary phases was fabricated by spark plasma sintering(SPS)using these high Zn content aluminum powders.The solution-natural aging treatments were also used to further optimize the composition,size and distribution of secondary phases.The tensile strength reached 540MPa and break elongation reached 5.3％when the solution treatment temperature was 400℃.The multiple process of gas atomization-SPS sintering-solution aging treatment provides a new preparation method to ultra-high Zn content 7xxx series aluminum alloys.
关键词
铝合金/气雾化/SPS烧结/固溶-时效/超高Zn含量Key words
aluminum alloy/gas atomization/SPS sintering/solution-aging treatment/Ultra-high Zn content引用本文复制引用
基金项目
北华航天工业学院科学研究项目(ZD202201)
河北省高等学校科学技术研究项目(QN2019104)
河北省自然科学基金资助项目(E2019409052)
出版年
2024
NETL
NSTL
万方数据