Formation of anomalously large Al single crystals at triple points during pulsed electric current sintering (PECS) of Al86Ni6Y 4.5Co2La1.5 metallic glass

Li, X. P., Wang, J. Q., Yan. M., Ji, G., Schaffer, G. B. and Qian, M. (2014) Formation of anomalously large Al single crystals at triple points during pulsed electric current sintering (PECS) of Al86Ni6Y 4.5Co2La1.5 metallic glass. Materials Letters, 132 196-199. doi:10.1016/j.matlet.2014.06.077

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Author Li, X. P.
Wang, J. Q.
Yan. M.
Ji, G.
Schaffer, G. B.
Qian, M.
Title Formation of anomalously large Al single crystals at triple points during pulsed electric current sintering (PECS) of Al86Ni6Y 4.5Co2La1.5 metallic glass
Journal name Materials Letters   Check publisher's open access policy
ISSN 0167-577X
1873-4979
Publication date 2014-10-01
Year available 2014
Sub-type Article (original research)
DOI 10.1016/j.matlet.2014.06.077
Open Access Status
Volume 132
Start page 196
End page 199
Total pages 4
Place of publication Amsterdam, The Netherlands
Publisher Elsevier
Collection year 2015
Language eng
Abstract 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 Al 86Ni6Y4.5Co2La1.5 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.
Keyword Crystallization
Diffusion
Metallic glass
Pulsed electric current sintering
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2015 Collection
 
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