Effects of gas to melt ratio on the microstructure of an Al-10.83Zn-3.39Mg-1.22Cu alloy produced by spray atomization and deposition

Guo, S., Ning, Z. L., Zhang, M. X., Cao, F. Y. and Sun, J. F. (2014) Effects of gas to melt ratio on the microstructure of an Al-10.83Zn-3.39Mg-1.22Cu alloy produced by spray atomization and deposition. Materials Characterization, 87 62-69. doi:10.1016/j.matchar.2013.10.030


Author Guo, S.
Ning, Z. L.
Zhang, M. X.
Cao, F. Y.
Sun, J. F.
Title Effects of gas to melt ratio on the microstructure of an Al-10.83Zn-3.39Mg-1.22Cu alloy produced by spray atomization and deposition
Journal name Materials Characterization   Check publisher's open access policy
ISSN 1044-5803
1873-4189
Publication date 2014-01-01
Year available 2013
Sub-type Article (original research)
DOI 10.1016/j.matchar.2013.10.030
Open Access Status Not Open Access
Volume 87
Start page 62
End page 69
Total pages 8
Place of publication Philadelphia, PA, United States
Publisher Elsevier
Language eng
Subject 2210 Mechanical Engineering
2211 Mechanics of Materials
2500 Materials Science
3104 Condensed Matter Physics
Abstract Various gas to melt ratios (GMR) that govern the cooling rate of spray forming can be achieved through controlling the atomizer form and the atomization pressure. The effect of the GMR on microstructures of an Al-10.83Zn-3.39Mg-1.22Cu alloy produced through spray forming has been studied using electron microscopy. When the GMR is high at 3.5, dendritic structure and quasi-crystalline i-Mg32(AlZn)49 particles inherited from the original powders can be observed. Spray forming at medium GMR of 2.3 produces equiaxed α-Al grains and MgZn2 phase that discontinuously distributes along the grain boundaries and within the grains as small particles. The low GMR of 1.4 corresponds to low cooling rate. Coarse and equiaxed α-Al grains together with eutectic structure consisting of b.c.c.-Mg32(AlZn)49 and α-Al phases along the grain boundaries are obtained.
Keyword Al-10.83Zn-3.39Mg-1.22Cu alloy
Deposited microstructure
Gas to melt ratio (GMR)
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2014 Collection
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 5 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 6 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Tue, 17 Dec 2013, 10:14:55 EST by System User on behalf of School of Mechanical and Mining Engineering