Abstract
The effect of solidification history on the resultant microstructure in atomized Al-2.56 wt% Fe and Al-6.0 wt% Fe powders was studied, with particular emphasis on droplet size, undercooling, and phase stability. The atomized Al-Fe powders exhibited four microstructural features, i.e., Al3Fe phase (now known as Al13Fe4), A1 + Al6Fe, α-Al dendrite, and a predendritic microstructure. The presence of these phases was noted to depend on alloy composition and a kinetic phase competitive growth mechanism due to the initial undercooling experienced by the powders. The occurrence of structures of the predendritic, cellular, and/or dendritic type was properly predicted by the theory of dendrite growth into undercooled alloy melts for the case of large undercoolings.
| Original language | English |
|---|---|
| Pages (from-to) | 729-736 |
| Number of pages | 8 |
| Journal | Journal of Materials Research |
| Volume | 14 |
| Issue number | 3 |
| Publication status | Published - 1999 Mar 1 |
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ASJC Scopus subject areas
- Materials Science(all)
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Microstructural characterization and solidification behavior of atomized Al-Fe powders. / Zhou, Y.; Juarez-Islas, J. A.; Alvarez-Fregoso, O.; Yoon, Wooyoung; Lavernia, E. J.
In: Journal of Materials Research, Vol. 14, No. 3, 01.03.1999, p. 729-736.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Microstructural characterization and solidification behavior of atomized Al-Fe powders
AU - Zhou, Y.
AU - Juarez-Islas, J. A.
AU - Alvarez-Fregoso, O.
AU - Yoon, Wooyoung
AU - Lavernia, E. J.
PY - 1999/3/1
Y1 - 1999/3/1
N2 - The effect of solidification history on the resultant microstructure in atomized Al-2.56 wt% Fe and Al-6.0 wt% Fe powders was studied, with particular emphasis on droplet size, undercooling, and phase stability. The atomized Al-Fe powders exhibited four microstructural features, i.e., Al3Fe phase (now known as Al13Fe4), A1 + Al6Fe, α-Al dendrite, and a predendritic microstructure. The presence of these phases was noted to depend on alloy composition and a kinetic phase competitive growth mechanism due to the initial undercooling experienced by the powders. The occurrence of structures of the predendritic, cellular, and/or dendritic type was properly predicted by the theory of dendrite growth into undercooled alloy melts for the case of large undercoolings.
AB - The effect of solidification history on the resultant microstructure in atomized Al-2.56 wt% Fe and Al-6.0 wt% Fe powders was studied, with particular emphasis on droplet size, undercooling, and phase stability. The atomized Al-Fe powders exhibited four microstructural features, i.e., Al3Fe phase (now known as Al13Fe4), A1 + Al6Fe, α-Al dendrite, and a predendritic microstructure. The presence of these phases was noted to depend on alloy composition and a kinetic phase competitive growth mechanism due to the initial undercooling experienced by the powders. The occurrence of structures of the predendritic, cellular, and/or dendritic type was properly predicted by the theory of dendrite growth into undercooled alloy melts for the case of large undercoolings.
UR - http://www.scopus.com/inward/record.url?scp=0033099477&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0033099477&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0033099477
VL - 14
SP - 729
EP - 736
JO - Journal of Materials Research
JF - Journal of Materials Research
SN - 0884-2914
IS - 3
ER -