Recent Developments of Rheo-Diecast Components for Transportation Markets


Article Preview

Recent developments and applications of rheo-diecast components for transportation markets are described. The components have been produced using the SEED (Swirled Enthalpy Equilibrium Device) semi-solid process. The development process typically involves several steps, including (1) an evaluation (and modification) of the component design to ensure it is suitable for semi-solid die casting, (2) the use of flow and solidification simulation to optimize the layout of the gating system, and to ensure that the modified component design can be produced without filling turbulence and shrinkage porosity, (3) stress modeling to ensure that the redesigned component will meet performance targets, and (4) in-plant development of the optimum process parameters. This development process will be described in detail for several commercial components, including two brackets for trucking applications, and connectors used in the frame of an electric bus.



Solid State Phenomena (Volume 285)

Edited by:

Qiang Zhu, Ahmed Rassili, Stephen P. Midson and Xiao Gang Hu




D. Q. Li et al., "Recent Developments of Rheo-Diecast Components for Transportation Markets", Solid State Phenomena, Vol. 285, pp. 417-422, 2019

Online since:

January 2019




* - Corresponding Author

[1] S. Midson, Semi-solid moulding: Competition to cast and machine from forging in making automotive complex components. Transactions of Nonferrous Metals Society of China, 20(2010), 1042-1047.


[2] S. Midson, Industrial Applications for Aluminum Semi-Solid Castings, Solid State Phenom. 217-218 (2015) 487-495.


[3] J. Langlais, A. Lemieux, The SEED Technology for Semi-Solid Processing of Aluminum Alloys: A Metallurgical and Process Overview. Solid State Phenomena, 116-117(2006) 472-477.


[4] S. Janudom, J. Wannasin, J. Basem, et al., Characterization of flow behavior of semi-solid slurries containing low solid fractions in high-pressure die casting, Acta Mater. 61 (2013) 6267-6275.


[5] H.X. Lu, Y.F. He, S. Midson, et al., Controlling and Minimizing Blistering during T6 Heat Treating of Semi-Solid Castings, Solid State Phenomena, 256(2016) 192-198.