Journal
MATERIALS LETTERS
Volume 230, Issue -, Pages 275-278Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2018.07.144
Keywords
Wire plus arc additive manufacturing; Metals and alloys; Solution treatment temperature; Microstructure; Mechanical property
Funding
- Natural Science Foundation of China [51675031]
- Academic Excellence Foundation of BUAA
- Fundamental Research Funds for the Central Universities [YWF-18-BJ-J244]
- Beijing Municipal Science and Technology Commission
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2024 aluminum alloy deposits were produced with wire + arc additive manufacturing procedure. Solution treatment + natural aging processes with different solution treatment temperature were conducted to improve the properties. The microstructure and mechanical properties were investigated. After heat treatment the distributing characteristic of the second phase changed to be dispersive from continuous in as-deposited condition. Solution treatment + natural aging process can significantly improve the properties of WAAM 2024 aluminum alloy. With higher solution treatment temperature, the micro hardness, tensile properties and elongation presented an increasing trend. After 503 degrees C solution treatment + natural aging process, the micro hardness, ultimate tensile strength, yield strength and elongation were 143HV, 497 MPa, 330 MPa and 16%, respectively, which can nearly meet the applying requirement. (C) 2018 Elsevier B.V. All rights reserved.
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