Study on Electric Pulse Assisted Aging Process of High-Strength Aluminum Alloy Plates

MA Yunlong; ZHAN Lihua; XU Yongqian; TONG Canyu; TAN Jingsheng

doi:10.16080/j.issn1671-833x.2017.23/24.042

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Study on Electric Pulse Assisted Aging Process of High-Strength Aluminum Alloy Plates

更新时间：2025-10-30

- Study on Electric Pulse Assisted Aging Process of High-Strength Aluminum Alloy Plates
- Aeronautical Manufacturing Technology Vol. 60, Issue 23/24, (2017)
- 作者机构：
  
  1. 北京宇航系统工程研究所,北京,100076
  2. 中南大学轻合金研究院,长沙,410083
  3. 中南大学机电工程学院,长沙,410083
- 作者简介：
- 基金信息：
- DOI：10.16080/j.issn1671-833x.2017.23/24.042
  CLC：
- Published：2017
- 稿件说明：
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马云龙1，湛利华2，3，徐永谦2，童璨瑜2，谭景升3. 高强铝合金板材电脉冲辅助时效热处理工艺研究*[J]. 航空制造技术, 2017, 60(23/24): 42-47. MA Yunlong1, ZHAN Lihua2,3, XU Yongqian2, TONG Canyu2, TAN Jingsheng3. Study on Electric Pulse Assisted Aging Process of High-Strength Aluminum Alloy Plates. Aeronautical Manufacturing Technology, 2017, 60(23/24): 42-47.

MA Yunlong, ZHAN Lihua, XU Yongqian, et al. Study on Electric Pulse Assisted Aging Process of High-Strength Aluminum Alloy Plates[J]. Aeronautical Manufacturing Technology, 2017, 60(23/24).
马云龙1，湛利华2，3，徐永谦2，童璨瑜2，谭景升3. 高强铝合金板材电脉冲辅助时效热处理工艺研究*[J]. 航空制造技术, 2017, 60(23/24): 42-47. MA Yunlong1, ZHAN Lihua2,3, XU Yongqian2, TONG Canyu2, TAN Jingsheng3. Study on Electric Pulse Assisted Aging Process of High-Strength Aluminum Alloy Plates. Aeronautical Manufacturing Technology, 2017, 60(23/24): 42-47. DOI： 10.16080/j.issn1671-833x.2017.23/24.042.

MA Yunlong, ZHAN Lihua, XU Yongqian, et al. Study on Electric Pulse Assisted Aging Process of High-Strength Aluminum Alloy Plates[J]. Aeronautical Manufacturing Technology, 2017, 60(23/24). DOI： 10.16080/j.issn1671-833x.2017.23/24.042.

摘要

以2219 铝合金轧制板材为研究对象，通过仿真分析、电脉冲辅助时效热处理试验、拉伸力学性能测试和透射电镜观察，系统研究了低密度电脉冲对板材时效热处理过程中电流密度分布、焦耳热效应及其时效后的力学性能与析出相微观组织的影响。结果表明：电脉冲辅助时效热处理过程中，板材峰值电流密度呈中心对称分布；80 A/cm2低密度脉冲电流作用下，板材大部分区域的峰值电流密度值在40~120A/cm2 范围，温升最大不超过1℃。与常规时效工艺相比，电脉冲辅助时效热处理工艺促进了晶内强化相析出进程，同时改善了晶内析出相分布，使板材峰时效时间从15h 缩短到10h，峰时效屈服强度也从283MPa 提升到303MPa。综上所述，电脉冲辅助时效工艺有利于缩短铝合金板材时效热处理周期并改善峰时效力学性能。

Abstract

The electric pulse assisted aging process of 2219 aluminum alloy plates is simulated and studied by experiments.The effect of electric pulse on the current density distribution

Joule heat effect

mechanical properties and precipitates microstructure is investigated by simulation analysis

electric pulse assisted aging test

tensile test and transmission electron microscopy observation. The results show that the peak current density of the electric pulse assisted aged plate is symmetrically distributed. Under the current density of 80A/cm2

the peak current density in most areas of the sheet is between 40 and 120A/cm2. Meanwhile

the temperature rise of the plate is less than 1℃ . Compared with the conventional aging process

the aging precipitation process is accelerated and the distribution of precipitates is homogenized after the electric pulse assisted aging process. The peak aging time was shortened from 15h to 10h

peak aging yield strength also increased from 283MPa to 303MPa. Furthermore

it indicated that the electric pulse assisted aging process can shorten the production time and improve the mechanical properties of the studied alloy.

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