Growth Dynamics of Faceted Al13Fe4 intermetallic Revealed by High-speed Synchrotron X-ray Quantification

Zihan Song, Oxana Magdysyuk, Lei Tang, Tay Sparks, Biao Cai

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)
185 Downloads (Pure)

Abstract

High-speed synchrotron tomography was used to investigate the nucleation and growth dynamics of Al13Fe4 intermetallic during solidification of an Al-5wt%Fe alloy, providing new insights into its formation process. The majority of Al13Fe4 intermetallics nucleated near the surface oxide of the specimen and a few nucleated at Al13Fe4 phase. Al13Fe4 crystals grew into a variety of shapes, including plate-like, hexagonal tabular, stair-like and V-shaped, which can be attributed to the crystal structure of this compound and its susceptibility to twinning. Hole-like defects filled with aluminium melt were observed within the intermetallics. Orentied particle attachement mechanism was proposed to explain the formation of the Al13Fe4 intermetialic, which needs further experiments and simulation to confirm.
Original languageEnglish
Article number158604
JournalJournal of Alloys and Compounds
Early online date5 Jan 2021
DOIs
Publication statusE-pub ahead of print - 5 Jan 2021

Bibliographical note

Not yet published 08/01/2021

Fingerprint

Dive into the research topics of 'Growth Dynamics of Faceted Al13Fe4 intermetallic Revealed by High-speed Synchrotron X-ray Quantification'. Together they form a unique fingerprint.

Cite this