High-Pressure Die Casting: A Review of Progress from the EPSRC Future LiME Hub

Ewan Lordan, Yijie Zhang, Kun Dou, Alain Jacot, Chrysoula Tzileroglou, Shihao Wang, Yun Wang, Jayesh Patel, Jaime Lazaro-Nebreda, Xiaorong Zhou, Teruo Hashimoto, Zhongyun Fan

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This article provides an overview of high-pressure die casting (HPDC)-related research undertaken at the EPSRC Future LiME Hub between 2015–2022. The project aimed to identify the cause of variability in the tensile ductility of die-cast structures, and to develop novel processing techniques to address this issue. Variability in tensile ductility was related to the size of large pores and non-metallic inclusions. It was proposed that these non-metallic inclusions formed during the pyrolysis of commercial plunger lubricants in the shot sleeve, and that these large pores derived from dilatational strains introduced during semi-solid deformation. Processing parameters and die design were found to significantly influence the microstructure of die-cast products, and the subsequent variability in tensile ductility. To close, recent progress on the application of intensive melt shearing to HPDC is reviewed. Intensive melt shearing was found to induce significant grain refinement in both Al and Mg alloys due to the effective dispersion of native oxide particles, and the use of these particles as heterogeneous nucleation substrates. The presence of native oxide particles also enabled the use of novel heat treatment procedures that avoided conventional issues such as surface blistering and geometrical distortion.
Original languageEnglish
Article number1575
Issue number10
Early online date23 Sept 2022
Publication statusPublished - 1 Oct 2022


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