Microstructure Characteristic of 4043 Aluminum Alloy Produced by Arc Additive Manufacturing Process With Forced Water Cooling Constraint

LIU Yibo; JIN Peng; WANG Jianfeng; LI Junzhao; LI Changguang; LI Ziyan; SUN Qingjie

doi:10.16080/j.issn1671–833x.2019.01/02.058

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Microstructure Characteristic of 4043 Aluminum Alloy Produced by Arc Additive Manufacturing Process With Forced Water Cooling Constraint

更新时间：2025-10-30

- Microstructure Characteristic of 4043 Aluminum Alloy Produced by Arc Additive Manufacturing Process With Forced Water Cooling Constraint
- Aeronautical Manufacturing Technology Vol. 62, Issue 1/2, (2019)
- 作者机构：
  
  1. 哈尔滨工业大学先进焊接与连接国家重点实验室,哈尔滨,150001
  2. 北京遥感设备研究所,北京,110000
  3. 哈尔滨工业大学（威海）山东省特种焊接技术重点实验室,威海,264209
- 作者简介：
- 基金信息：
- DOI：10.16080/j.issn1671–833x.2019.01/02.058
  CLC：
- Published：2019
- 稿件说明：
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刘一搏，靳鹏，王建峰，李军兆，李长光，李子岩，孙清洁. 4043铝合金电弧增材冷约束组织特征研究[J]. 航空制造技术, 2019, 62(1/2): 58-63. LIU Yibo, JIN Peng, WANG Jianfeng, LI Junzhao, LI Changguang, LI Ziyan, SUN Qingjie. Microstructure Characteristic of 4043 Aluminum Alloy Produced by Arc Additive Manufacturing Process With Forced Water Cooling Constraint. Aeronautical Manufacturing Technology, 2019, 62(1/2): 58-63.

LIU Yibo, JIN Peng, WANG Jianfeng, et al. Microstructure Characteristic of 4043 Aluminum Alloy Produced by Arc Additive Manufacturing Process With Forced Water Cooling Constraint[J]. Aeronautical Manufacturing Technology, 2019, 62(1/2).
刘一搏，靳鹏，王建峰，李军兆，李长光，李子岩，孙清洁. 4043铝合金电弧增材冷约束组织特征研究[J]. 航空制造技术, 2019, 62(1/2): 58-63. LIU Yibo, JIN Peng, WANG Jianfeng, LI Junzhao, LI Changguang, LI Ziyan, SUN Qingjie. Microstructure Characteristic of 4043 Aluminum Alloy Produced by Arc Additive Manufacturing Process With Forced Water Cooling Constraint. Aeronautical Manufacturing Technology, 2019, 62(1/2): 58-63. DOI： 10.16080/j.issn1671–833x.2019.01/02.058.

LIU Yibo, JIN Peng, WANG Jianfeng, et al. Microstructure Characteristic of 4043 Aluminum Alloy Produced by Arc Additive Manufacturing Process With Forced Water Cooling Constraint[J]. Aeronautical Manufacturing Technology, 2019, 62(1/2). DOI： 10.16080/j.issn1671–833x.2019.01/02.058.

摘要

采用强冷约束辅助电弧增材方法制造4043 铝合金薄壁墙体，并对薄壁试样的宏观成型及组织特征进行研究。结果表明，使用强冷约束装置后试样垂直度提高，表面成形精度得到明显改善；平均晶粒尺寸由不加强冷约束时的25μm 减小为12μm，晶粒得到明显细化；施加约束后4043 铝合金侧壁直接与约束装置接触，使得侧壁散热速度加快，侧壁产生胞状组织，中心为柱状组织且与增材方向呈一定角度生长。薄壁墙体底部到顶部硬度呈现递减规律，硬度平均值由不加约束时的48HV 提高到58HV ；横向晶粒分布为两侧呈胞状组织，中心区域为柱状组织，中心区域硬度比两侧低。

Abstract

The 4043 aluminum alloy thin–wall was manufactured by arc additive manufacturing (AM) process with forced water cooling constraint

and the macro–appearance and microstructure of AM specimens were studied. The results revealed that the verticality of the sample and the surface forming precision were improved. The average grain size decreased from 25μm to 12μm when the water cooling constraint was used

and the grain size was obviously refined. When the water cooling constraint device was applied

the 4043 aluminum alloy lateral wall was directly in contact with the restraint device

and the heat quickly dissipated. Therefore

the columnar grain grew in a certain angle. The hardness decreased from the bottom to the top of the AM specimen

and the average value of hardness increased from 48HV without restriction to 58HV. The horizontal grain distribution was cellular grain on both sides

central region was columnar grain

and the hardness of central region was lower than that of both sides.

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