Authors: D H Xiao Z W Geng L Chen Z Wu H Y Diao M Song P F Zhou
Publish Date: 2015/07/10
Volume: 46, Issue: 10, Pages: 4793-4803
Abstract
In order to find good candidate materials for degradable fracturing ball applications MgAlZnCu alloys with different contents of aluminum zinc and copper were prepared by ingot metallurgy The effects of aluminum zinc and copper additions on the microstructure compressive strength and rapid decomposition properties of the alloys have been investigated using scanning electron microscopy compressive tests and immersion tests The results show that the addition of high contents Al 15 to 20 wt pct in pure magnesium promotes a large number of networklike βMg17All2 phases which helps produce more microthermocouples to accelerate the corrosion process in 3 wt pct potassium chloride KCl at 366 K 93 °C Adding different Zn contents improves the compressive properties of Mg20Al alloys drastically However it decreases the decomposition rate in 3 wt pct KCl at 366 K 93 °C Small amount of Cu will slightly reduce the compressive strength of Mg20Al5Zn alloy but dramatically increase its decomposition rate
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