Impression creep properties of a semi-solid processed magnesium–aluminum alloy containing calcium and rare earth elements

B Nami, H Razavi, SM Miresmaeili, S Mirdamadi… - Scripta Materialia, 2011 - Elsevier
B Nami, H Razavi, SM Miresmaeili, S Mirdamadi, SG Shabestari
Scripta Materialia, 2011Elsevier
The creep properties of a thixoformed magnesium–aluminum alloy containing calcium and
rare earth elements were studied under shear modulus-normalized stresses ranging from
0.0225 to 0.035 at temperatures of 150–212° C using the impression creep technique.
Analysis of the creep mechanism based on a power-law equation indicated that pipe
diffusion-controlled dislocation climb is the dominant mechanism during creep. The alloy
has a better creep resistance than high-pressure die-cast magnesium–aluminum alloy.
The creep properties of a thixoformed magnesium–aluminum alloy containing calcium and rare earth elements were studied under shear modulus-normalized stresses ranging from 0.0225 to 0.035 at temperatures of 150–212 °C using the impression creep technique. Analysis of the creep mechanism based on a power-law equation indicated that pipe diffusion-controlled dislocation climb is the dominant mechanism during creep. The alloy has a better creep resistance than high-pressure die-cast magnesium–aluminum alloy.
Elsevier
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