| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1643928 | Materials Letters | 2014 | 4 Pages |
•Anomalously large Al single crystals form during PECS of Al-based metallic glass.•The size of the Al single crystals is around 500 nm.•The formation occurs at triple points between powder particles.•The underlying mechanism is the enhancement of long-range diffusion of Al.•Applied external electric field can influence diffusion in Al-based metallic glass.
Anomalously large aluminium single crystals with a size of ~500 nm have been observed at triple points between powder particles after pulsed electric current sintering below and in the supercooled liquid region in an Al86Ni6Y4.5Co2La1.5 metallic glass. The formation of the large Al grains is attributed to high localized temperatures and the enhancement of long-range diffusion of Al by the electric current leading to grain growth and coalescence.
