Microstructural characterization and solidification behavior of atomized Al-Fe powders

Y. Zhou, J. A. Juarez-Islas, O. Alvarez-Fregoso, Wooyoung Yoon, E. J. Lavernia

Research output: Contribution to journalArticle

3 Citations (Scopus)

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 languageEnglish
Pages (from-to)729-736
Number of pages8
JournalJournal of Materials Research
Volume14
Issue number3
Publication statusPublished - 1999 Mar 1

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Undercooling
supercooling
Powders
solidification
Solidification
dendrites
microstructure
Microstructure
Dendrites (metallography)
Phase stability
histories
occurrences
Kinetics
kinetics
Chemical analysis

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Zhou, Y., Juarez-Islas, J. A., Alvarez-Fregoso, O., Yoon, W., & Lavernia, E. J. (1999). Microstructural characterization and solidification behavior of atomized Al-Fe powders. Journal of Materials Research, 14(3), 729-736.

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 journalArticle

Zhou, Y, Juarez-Islas, JA, Alvarez-Fregoso, O, Yoon, W & Lavernia, EJ 1999, 'Microstructural characterization and solidification behavior of atomized Al-Fe powders', Journal of Materials Research, vol. 14, no. 3, pp. 729-736.
Zhou Y, Juarez-Islas JA, Alvarez-Fregoso O, Yoon W, Lavernia EJ. Microstructural characterization and solidification behavior of atomized Al-Fe powders. Journal of Materials Research. 1999 Mar 1;14(3):729-736.
Zhou, Y. ; Juarez-Islas, J. A. ; Alvarez-Fregoso, O. ; Yoon, Wooyoung ; Lavernia, E. J. / Microstructural characterization and solidification behavior of atomized Al-Fe powders. In: Journal of Materials Research. 1999 ; Vol. 14, No. 3. pp. 729-736.
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