Results
Title

Solidification behavior of indium droplets embedded in aluminum by differential fast scanning calorimetry.

Authors

Wu, Mannan; Zhang, Quanliang; Zhao, Bingge; Zhang, Ling; Zhai, Qijie; Gao, Yulai

Abstract

Indium droplets embedded in aluminum matrix were successfully prepared by melt spinning technique. The results showed that an amount of nano-sized indium droplets were embedded inside aluminum grains, while micro-sized indium droplets were distributed along aluminum grain boundaries. The nano-sized indium droplets exhibited an orientation relationship with the aluminum matrix of (1¯01)In||(1¯11¯)Al, (1¯10)In||(002¯)Al and [111]In||[110]Al. The nucleation of indium droplets was catalyzed by the surrounding Al matrix on the {111}Al or {002}Al lattice planes. Employing differential scanning calorimetry and differential fast scanning calorimetry, it was found that the solidification of indium droplets consisted of three stages. Based on the classical nucleation theory, the solidification behavior of nano-sized In droplets was studied. The results displayed that the contact angle at larger undercooling was far greater than that in smaller undercooled melt, implying that the catalyzing effect of the matrix on the nucleation in larger undercooling could be depressed.

Subjects

DIFFERENTIAL scanning calorimetry; DROPLETS; MATRIX effect; SOLIDIFICATION; MELT spinning

Publication

Journal of Thermal Analysis & Calorimetry, 2019, Vol 135, Issue 6, p2995

ISSN

1388-6150

Publication type

Academic Journal

DOI

10.1007/s10973-018-7523-1