Comparison of the techniques to produce non-dendritic feedstocks for thixoforming

Szerzők

  • Kawan Mahmood Abdulrahman Obuda Universty
  • Viktor Gonda
  • Mihály Réger

Kulcsszavak:

Semi-solid metal; thixoforming; Semi-Solid Rheocasting; Cooling Slope; Magneto Hydrodynamic stirring; microstructural properties.

Absztrakt

Abstract — Preparation methods of feedstock billets for thixoforming including Semi-Solid Rheocasting (SSR), Cooling Slope (CS), Magneto-Hydrodynamic stirring (MHD) and Semi-Solid Rheocasting with Cooling Slope (SSR+CS) are studied in this paper. On the base material of aluminum A201, non-dendritic feedstocks for thixoforming were prepared and compared by analysing their microstructures. The main variation between the microstructure provided by these technologies are presented, and a comprehensive review is made of the potential mechanisms that lead to microstructural alterations during the preparation of feedstocks.

Hivatkozások

[1] M. C. Flemings: Behavior of metal alloys in semi-solid state. Aluminum Transactions B, Volume 22, 1991.
[2] R. Canyook, S. Petsut, S. Wisutmethangoon, M. C. Flemings, J. Wannas: Evolution of microstructure in semi-solid slurries of rheocast aluminum alloy. 2010, pp. 120-150.
[3] Z. Fan: Semisolid Metal Processing. International Materials Review, Vol 47, 2002.
[4] E.T. Budiman: Aluminum: Effect of Water Cooling on the Production of Al-Si Thixotropic Feedstock by Cooling Slope Casting. Vol. 32 No. 2, 2., pp.158-166, 2009.
[5] A. Blanco, Z. Azpilgain, J. Lozares, P. Kapranos, I. Hurtado: Rheological characterization of Alloy A201. Aluminum, pp. 1638-1642, 2010.
[6] T. Witulski: The thixoformoability of aluminum alloys. Proceedings of the 5th Int. Semi-solid processing of alloys and composites, Golden, Co. USA, pp. 353-360, 1998.
[7] E. R. Freitas, E. G. Ferracini, M. Ferrante: Microstructure and rheology of an AA2024 Aluminium Alloy in the Semi-Solid State, and Mechanical Properties of a Back-Extruded Part. Journal of Materials Processing Technologies, pp. 241-249, 2004.
[8] E. Oberg, F. Jones, H. Horton, H. H. Holbrook: Machinery’s Handbook. Industrial Press, 2000.
[9] P. Kapranos: Course on Semi Solid Metal Processing, Thixoforming Group, University of Sheffield, 1994.
[10] S. Menargues et al: Simulation of the Semi-Solid Rheocasting process in an Automotive Component, Barcelona, Spain, 2012.

##submission.downloads##

Megjelent

2018-03-12

Folyóirat szám

Évf. 1 szám 2 (2018): Bánki Közlemények Summer (2018)

Rovat

Materials Science and Technology (Anyagtudomány és Technológia)

License

Bánki Közlemények is loyal to open access for academic work. All the original articles and review papers published in this journal are free to access immediately from the date of publication. We don’t charge any fees for any reader to download articles and reviews for their own scholarly use.

The Bánki Közlemények also operates under the Creative Commons Licence CC-BY-NC-ND. This allows for the reproduction of articles, free of charge, for non-commercial use only and with the appropriate citation information. All authors publishing with the Bánki Közlemények accept these as the terms of publication.