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Title: Reconstruction of 2D Al Ti on TiB in an aluminium melt
Authors: Qin, T
Fan, Z
Keywords: 2D Al3Ti on TiB2;Aluminium
Issue Date: 2011
Publisher: Institute of Physics
Citation: IOP Conference Series: Materials Science and Engineering, 27(1), 2011
Abstract: It has been widely considered that Al Ti is involved in the aluminium nucleation on TiB , although the mechanism has not been fully understood. In this paper molecular dynamics has been conducted to investigate this phenomenon at an atomistic scale. It was found that a two-dimensional Al Ti layer may remain on TiB above the aluminium liquidus. In addition, the results showed that this 2D Al Ti undergoes interface reconstruction by forming a triangular pattern. This triangular pattern consists of different alternative stacking sequences. The transition region between the triangles forms an area of strain concentration. By means of this mechanism, this interfacial Al Ti layer stabilizes itself by localizing the large misfit strain between TiB and Al Ti This reconstruction is similar to the hdp-fcc interface reconstruction in other systems which has been observed experimentally.
ISSN: 1757-8981
Appears in Collections:Publications
Mechanical and Aerospace Engineering
Brunel Centre for Advanced Solidification Technology (BCAST)

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