Abstract：
:Continuous solidification experiments were carried out with Cu-Bi-Sn alloys under the effects of Electric Current Pulses (ECPs). A model describing the microstructure evolution was developed. The formation of the microstructure in the continuously solidified alloys was calculated. The calculations demonstrated that ECPs mainly affect the solidification process through changing the energy barrier for the nucleation of the minority phase droplets (MPDs). When the matrix liquid has a lower electric conductivity compared to the MPD, the ECPs lead to a decrease in the energy barrier for the nucleation of the MPDs which then promote the formation of a finely dispersed microstructure. When the matrix liquid has a higher electric conductivity compared to the MPD, the ECPs cause an increase in the energy barrier for the nucleation and lead to the formation of a phase segregated microstructure.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Hongxiang J,Jie H,Jiuzhou Zdoi
10.1038/srep12680subject
Has Abstractpub_date
2015-07-31 00:00:00pages
12680issn
2045-2322pii
srep12680journal_volume
5pub_type
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