Solute Content and the Tensile Behavior of High Pressure Die Cast Mg-Al Alloys

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Binary Mg-Al alloys with varying content of aluminium from 0.5 to 12mass% have been studied. The proof stress increase in two steps whereas the ductility exhibits two correlated stepwise drops, as the aluminium content increases. The first increase in strength, and attendant drop in ductility, is observed between 4 and 5 mass% Al. The second stepwise change is observed between 10 and 12 mass% Al. These effects are connected with well defined changes in the microstructure: at 4 mass% a dispersion of β-phase intermetallic particles appears in the core region and a closed cell structure develops near the surface; at 12 mass% Al, the increased volume fraction of the β- phase intermetallics extends the interconnected network of intermetallics to include the core region as well. The micromechanics of the strengthening and decreased ductility are discussed.

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Periodical:

Materials Science Forum (Volumes 561-565)

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Edited by:

Young Won Chang, Nack J. Kim and Chong Soo Lee

Pages:

333-336

Citation:

A.V. Nagasekhar and C. H. Cáceres, "Solute Content and the Tensile Behavior of High Pressure Die Cast Mg-Al Alloys", Materials Science Forum, Vols. 561-565, pp. 333-336, 2007

Online since:

October 2007

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[1] C.H. Cáceres, W.J. Poole, A.L. Bowles, and C.J. Davidson: Mater. Sci. Engg. A Vol. 402 (2005), p.269.

[2] C.H. Cáceres, J.R. Griffiths, A.R. Pakdel, and C.J. Davidson: Mater. Sci. Engg. A Vol. A402 (2005), p.258.

[3] C.H. Cáceres, J.R. Griffiths, C.J. Davidson, and C.L. Newton: Mater. Sci. Engg. A Vol. 325 (2002), p.344.

[4] C.H. Cáceres: Int. J. Cast Metals Res. Vol. 14 (2001), p.185.

[5] A.L. Bowles, J.R. Griffiths, and C.J. Davidson, In: J. Hryn (Ed. ) Magnesium Technology 2001, New Orleans; 2001 (The Minerals, Metals and Materials Society (TMS), Warrendale, PA), p.161.

[6] C.H. Cáceres and W.J. Poole: Mater. Sci. Engg. A Vol. 332 (2002), p.1.

[7] W.P. Sequeira, G.L. Dunlop, and M.T. Murray, In: G.W. Lorimer (Ed. ) 3rd International Magnesium Conference, London; 1997 (The Institute of Metals, London), p.63.

[8] W.P. Sequeira, M.T. Murray, G.L. Dunlop, and D.H. StJohn, in: TMS Symposium on automotive alloys (The Minerals Metals and Materials Society (TMS), Warrendale, PA, 1997), p.169.

[9] T. Aune, H. Westengen, and T. Ruden, in: SAE Technical Paper 930418 (SAE, Warrendale, PA, 1993), p.51.

[10] T. Aune and H. Westengen, in: SAE Technical Paper 950424 (SAE, Warrendale, PA, 1995), p.332.

[11] T. Aune, H. Westengen, and T. Ruden, in: SAE Technical Paper 940777 (SAE, Warrendale, PA, 1994), p.553.

[12] P.D.D. Rodrigo and V. Ahuja, In: E. Aghion and D. Eliezer (Ed. ) Magnesium 2000 (2nd Israeli Intl. Conf. on Magnesium Science & Technology), Dead Sea; 2000 (MRI (BeerSheva), p.97.

[13] T.G. Basner, M. Evans, and D.J. Sakkinen, in: SAE Technical Paper 930419 (SAE International, Warrendale, PA, 1993), p.59.

[14] A.M. Gokhale and G.R. Patel, in: J. Hryn (Ed. ) Magnesium Technology 2001, (The Minerals, Metals and Materials Society (TMS), Warrendale, PA, 2001), p.195.

[15] D.J. Sakkinen, in: SAE Technical Paper 940779 (SAE, Warrendale, PA, 1994), p.558.

[16] L.M. Brown and W.M. Stobbs: Phil. Mag. Vol. 23 (1971), p.1185.

[17] L.M. Brown and W.M. Stobbs: Phil. Mag. Vol. 23 (1971), p.1201.

[18] L.M. Brown and J.D. Embury, In: The microstructure and design of alloys (ICSMA-3), (The Institute of Metals, Cambridge, 1973), p.164.

[19] C.H. Cáceres and D.M. Rovera: J. Light Metals Vol. 1/3 (2001), p.151.

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