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http://bura.brunel.ac.uk/handle/2438/22712
Title: | On the probabilistic nature of high-pressure die casting |
Authors: | Lordan, E Zhang, Y Dou, K Jacot, A Tzileroglou, C Blake, P Fan, Z |
Keywords: | Al alloys;casting;X-ray tomography;defects;mechanical properties |
Issue Date: | 4-May-2021 |
Publisher: | Elsevier BV |
Citation: | Lordan, E., Zhang, Y., Dou, K., Jacot, A., Tzileroglou, C., Blake, P. and Fan, Z. (2021) 'On the probabilistic nature of high-pressure die casting', Materials Science and Engineering: A, 817, 141391, pp. 1-. doi: https://doi: 10.1016/j.msea.2021.141391. |
Abstract: | © 2021 The Authors. This article unmasks the probabilistic nature of high-pressure die casting; specifically, the cause of scatter in the tensile ductility of die-cast Al8Si0·4Mn0·3Mg (wt.%) alloy. Scatter in tensile ductility is related to the size of large pores and non-metallic inclusions. We propose that these non-metallic inclusions form during the pyrolysis of commercial plunger lubricants, and that these large pores derive from dilatational strains introduced during semi-solid deformation. The apparent randomness of pore formation is thus ascribed to the heterogeneous nature of the semi-solid network. Reducing heat loss in the shot chamber is shown to promote a more homogeneous grain structure, leading to a decrease in the maximum pore size from 1.32 mm to 0.37 mm, and an increase in the minimum tensile ductility from 6.8% to 9.4%. |
URI: | https://bura.brunel.ac.uk/handle/2438/22712 |
DOI: | https://doi.org/10.1016/j.msea.2021.141391 |
ISSN: | 0921-5093 |
Appears in Collections: | Brunel Centre for Advanced Solidification Technology (BCAST) |
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