Please use this identifier to cite or link to this item: http://buratest.brunel.ac.uk/handle/2438/10994
Title: Grain boundary precipitation induced by grain crystallographic misorientations in an extruded Al-Mg-Si-Cu alloy
Authors: Yang, W
Ji, S
Li, Z
Wang, M
Keywords: Aluminium alloys;EBSD;Grain boundary;Transmission electron microscope
Issue Date: 2015
Publisher: Elsevier Ltd
Citation: Journal of Alloys and Compounds, 624: 27 - 30, (2015)
Abstract: The grain boundary precipitation induced by grain crystallographic misorientations in an extruded Al-Mg-Si-Cu alloy was investigated by electron back-scattering patterns and high resolution transmission electron microscopy. The results showed that compared with the recrystallization cube {1 0 0}〈0 0 1〉 texture, the deformation brass {1 1 0}〈1 1 2〉 texture prevailed in the microstructure. The brass texture mainly contributed for the formation of low angle grain boundaries, where the pre-β″/β′ phases were formed during precipitation. The recrystallization cube texture predominately induced the formation of high angle grain boundaries, where the Q′/Q phases related to the corrosion were precipitated. And, high and low grain boundary was 23.5% and 76.5% proportion in the microstructure, respectively. Finally, it was believed that in order to improve the resistance to intergranular corrosion of alloy, the recrystallization cube {1 0 0}〈0 0 1〉 texture should be inhibited as far as possible.
URI: http://www.sciencedirect.com/science/article/pii/S0925838814027212
http://bura.brunel.ac.uk/handle/2438/10994
DOI: http://dx.doi.org/10.1016/j.jallcom.2014.10.206
ISSN: 0925-8388
Appears in Collections:Brunel Centre for Advanced Solidification Technology (BCAST)

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