Microstructural characterization and solidification behavior of atomized AlFe powders Academic Article

abstract

• The effect of solidification history on the resultant microstructure in atomized Al2.56 wt% Fe and Al6.0 wt% Fe powders was studied, with particular emphasis on droplet size, undercooling, and phase stability. The atomized AlFe powders exhibited four microstructural features, i.e., Al3Fe phase (now known as Al13Fe4), Al + Al6Fe, 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.

authors

• Lavernia Borrego, Enrique

published proceedings

• Journal of Materials Research

author list (cited authors)

• Zhou, Y., Juarez-Islas, J. A., Alvarez-Fregoso, O., Yoon, W. Y., & Lavernia, E. J.

complete list of authors

• Zhou, Y||Juarez-Islas, JA||Alvarez-Fregoso, O||Yoon, WY||Lavernia, EJ

publication date

• March 1999

publisher

• Springer Nature  Publisher

published in

• Journal of Materials Research  Journal

keywords

• 40 Engineering
• 4016 Materials Engineering

Digital Object Identifier (DOI)

• 10.1557/jmr.1999.0098

start page

• 729

end page

• 736

volume

• 14

issue

• 3

URL

• http://dx.doi.org/10.1557/jmr.1999.0098