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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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