Microstructure and Bending behaviour of Thixocast 2014 Alloy : Effect of processing temperature
Keywords:
Experimental Procedure, ThixocastingAbstract
In the present work, microstructure and mechanical properties of thixocast 2014 alloy were correlated and compared with gravity cast 2014 alloy having the same composition. Thixocasting of samples was done at 600°C, 615°C & 630°C within a cylindrical die. Microstructures and mechanical properties were observed, correlated and compared with those of gravity cast samples. The tensile strength, yield strength, hardness and percentage elongation of the thixocast samples found to be higher than those of gravity cast samples. Improved mechanical properties of thixocast samples are due to non-dendritic globular structure and morphology of silicon particles.
References
P. Leo, E. Cerri, Silicon particle damage in a thixocast A356 aluminium alloy, 2003
Flemings M.C., Behaviour of Metal Alloys in the Semisolid State, 1991
E. de Freitas , M. Ferrante , C.T. Ruckert , W.W. Bose, Thixocasting of an A356 alloy: Fluidity, porosity distribution and thermomechanical fatigue behavior, 2008
Matja Torkar, Mirko Dober , Iztok Nagli Influence of the working technology on Al-alloys in semi-solid state, 2009
P. Leo, E. Cerri, Silicon particle damage in a thixocast A356 aluminium alloy, 2003
Jessada Wannasin and Sangop Thanabumrungkul, Development of a semi-solid metal processing technique for aluminium casting applications, 2008
M. Modigell and J. Koke, J. Mat. Proc. Techn., 111,2001, 53-58
Masek B, Aisman D, Hronek P, Jirkova H, Jenicek S, Miniaturization in thixoforming, MM Science Journal, 2010,224-226
J. L. Jorstad : ‘ Semi solid metal processing of alloys and composites’, Solid State Phenomena,2016, 256, 3-8
Yurko J., Martinez A., Flemings M., The Spheroidal Growth Route to Semi-Solid Forming. Proceedings of the 8th International Conference on Semi-Solid Processing of Alloys and Composites, Limassol, Cyprus, September 21-23, 2004
UBE Industries Ltd., Method and Apparatus for Shaping Semisolid Materials, 1966
Martinez, Formation and processing of rheocast microstructures, Cambridge, MA, U.S.A , 2004
S. Kleiner, O. Beffort, M. Fuchs, P. J. Uggowitzer,Thixocasting of mg-al alloys using extruded Feedstock material, Institute of Metallurgy, ETH Swiss Federal Institute of Technology, Zurich, 2002
Flemings M.C., Behaviour of Metal Alloys in the Semisolid State, 1991, 957– 981