Comparison of heat treatment response of semisolid metal processed alloys A356 and F357

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dc.contributor.author Moller, Heinrich
dc.contributor.author Govender, Gonasagren
dc.contributor.author Stumpf, Waldo E.
dc.contributor.author Pistorius, Petrus Christiaan
dc.date.accessioned 2010-03-15T11:02:32Z
dc.date.available 2010-03-15T11:02:32Z
dc.date.issued 2010
dc.description.abstract The heat treatment response of semisolid metal high pressure die cast Al–7Si–Mg alloys A356 and F357 was studied and compared. It was found that the heat treatment behaviour of alloy F357 is influenced markedly by the stability of the Mg containing π phase. This phase, which dissolves in alloy A356 during solution treatment, persists in F357 and decreases the amount of magnesium in solid solution. This is the likely origin of the decrease in the aging response of the F357 alloy. The tensile properties (yield strength and ultimate tensile strength) of the alloys correlate much better with the Mg concentration in solid solution than with the bulk Mg content of the alloys. The recently developed shortened T6 heat treatment cycles for rheocast A356 were tested on alloy F357. The optimum artificial aging treatment was determined to be 180uC for 4 h, regardless of the prior natural aging period. en
dc.identifier.citation Moller, H, Govender, G, Stumpf, WE & Pistorius, PC 2010, 'Comparison of heat treatment response of semisolid metal processed alloys A356 and F357', International Journal of Cast Metals Research, vol. 23, no. 1, pp. 37-43. [http://www.maney.co.uk/search?fwaction=show&fwid=31] en
dc.identifier.issn 1364-0461
dc.identifier.other 10.1179/174313309X451252
dc.identifier.uri http://hdl.handle.net/2263/13440
dc.language.iso en en
dc.publisher Maney en
dc.rights Maney en
dc.subject Semisolid metal forming en
dc.subject Alloy A356 en
dc.subject Alloy F357 en
dc.subject Artificial aging en
dc.subject Iron rich intermetallics en
dc.subject.lcsh Alloys -- Heat treatment en
dc.title Comparison of heat treatment response of semisolid metal processed alloys A356 and F357 en
dc.type Article en


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