Microstructural Characterization of the Crystallization Sequence of a Severe Plastically Deformed Al-Ce-Ni-Co Amorphous Alloy

Abstract:

Discs of Al85Ce8Ni5Co2 amorphous alloy were severely deformed by high pressure torsion. Severe plastic deformation exceeding equivalent strain of 8.2 induces the formation of nanocrystalline fcc-Al in a more stable residual amorphous matrix. Calorimetric and X-ray diffraction measurements revealed that the deformed outer part of the disc crystallizes into a mixture of equilibrium phases during the first thermal event. However, in the amorphous ribbon the same crystalline mixture develops only after the second stage.

• Periodical: Materials Science Forum (Volumes 519-521)
• Pages: 1329-1334
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.519-521.1329
• Online since: July 2006
• Authors: Zsolt Kovács, P. Henits, Alexandre P. Zhilyaev, Quang Chinh Nguyen, Adam Revesz
• Keywords: Al-Based Metallic Glass, High Pressure Torsion (HPT), Primary Al Nanocrystallization

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