中文版 | English
Title

Facile and cost-effective approach to additively manufacture crack-free 7075 aluminum alloy by laser powder bed fusion

Author
Corresponding AuthorLi,Xinggang
Publication Years
2022-12-20
DOI
Source Title
ISSN
0925-8388
EISSN
1873-4669
Volume928
Abstract
It is an often challenging but essential issue to develop a facile and cost-effective approach to additively manufacture crack-free and high-strength Al alloys for their wider commercial applications. However, efficient synergistic combination of advanced technology and material development is hardly likely to achieve without considering the extreme processing conditions during additive manufacturing. In this study, the addition of 4 wt% Ti-6Al-4V (TC4) alloy powders, the most commercially used Ti alloy powders, into the laser powder bed fusion (L-PBF) of 7075 Al alloy was performed and experimentally verified to be capable of eliminating the hot cracks while substantially refining the grains. The as-printed sample was crack-free and had a high relative density of up to 99.95%. Synergy effect of the in-situ formation of Al(Ti,V) particles that act as the heterogeneous nucleation sites, and the solute effect of the elements Ti and V that possess a high grain growth restriction factor (Q value) in Al matrix can efficiently control the grain growth. After a direct ageing treatment, the resultant alloy displayed an excellent combination of the high ultimate tensile strength (441 ± 3 MPa) and large plasticity (10.1 ± 0.4%). Our work brings new insights between the grain refinement and crack elimination of additively manufactured Al alloys through addition of commercial Ti alloys, benefiting the tailoring and development of new crack-free and dense high-strength Al alloys for L-PBF.
Keywords
URL[Source Record]
Indexed By
Language
English
SUSTech Authorship
First ; Corresponding
Funding Project
Basic and Applied Basic Research Foundation of Guangdong Province[2021A1313110348];National Natural Science Foundation of China[51801096];National Natural Science Foundation of China[52074157];
WOS Research Area
Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS Subject
Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS Accession No
WOS:000859168200001
Publisher
ESI Research Field
MATERIALS SCIENCE
Scopus EID
2-s2.0-85138066477
Data Source
Scopus
Citation statistics
Cited Times [WOS]:2
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/402627
DepartmentDepartment of Mechanical and Energy Engineering
前沿与交叉科学研究院
Affiliation
1.Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.Shenzhen Key Laboratory for Additive Manufacturing of High-performance Materials,Southern University of Science and Technology,Shenzhen,518055,China
3.Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering,College of Civil and Transportation Engineering,Shenzhen University,Shenzhen,518060,China
4.Jiangxi Baohang Advanced Materials Co.,Ltd,Nanchang,330224,China
5.Academy for Advanced Interdisciplinary Studies,Southern University of Science and Technology,Shenzhen,518055,China
First Author AffilicationDepartment of Mechanical and Energy Engineering;  Southern University of Science and Technology
Corresponding Author AffilicationDepartment of Mechanical and Energy Engineering;  Southern University of Science and Technology;  Academy for Advanced Interdisciplinary Studies
First Author's First AffilicationDepartment of Mechanical and Energy Engineering
Recommended Citation
GB/T 7714
Li,Gan,Ruan,Gang,Huang,Yuhe,et al. Facile and cost-effective approach to additively manufacture crack-free 7075 aluminum alloy by laser powder bed fusion[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2022,928.
APA
Li,Gan.,Ruan,Gang.,Huang,Yuhe.,Xu,Zhen.,Li,Xinwei.,...&Zhu,Qiang.(2022).Facile and cost-effective approach to additively manufacture crack-free 7075 aluminum alloy by laser powder bed fusion.JOURNAL OF ALLOYS AND COMPOUNDS,928.
MLA
Li,Gan,et al."Facile and cost-effective approach to additively manufacture crack-free 7075 aluminum alloy by laser powder bed fusion".JOURNAL OF ALLOYS AND COMPOUNDS 928(2022).
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