Microstructure and Mechanical Properties of Bi27In38Sn35 Foil Produced by Rapid Solidification.

Autor: Gusakova, S. V., Shepelevich, V. G., Gusakova, O. V.
Předmět:
Zdroj: Journal of Engineering Physics & Thermophysics; Mar2021, Vol. 94 Issue 2, p534-540, 7p
Abstrakt: Investigations into the microstructure of Bi27In38Sn35 alloy have shown that an increase in the melt cooling rate from 102 to 105 K/s leads to a change in the solidification mechanism. At a melt cooling rate of 102 K/s, we observe consecutive solidification of the dendrites of the Sn4In phase, and then that of BiIn and BiIn2 phases in the interdendritic space. Bi27In38Sn35 foil produced by rapid solidification consists of BiIn, BiIn2, and Sn4In phases forming a lace-like structure. The foil′s chemical composition determined by X-ray spectral analysis was constant in thickness. Alloy foil phase grains have a microcrystalline structure and texture. The aging of rapidly solidified foil at room temperature causes size enlargement in phase and grain precipitations, which determines the change in its physical properties. Foil aging causes an increase in microhardness and affects tensile deformation: there is consolidation of rapidly solidified alloy at the initial stage of deformation and a reduction in its plasticity. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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