Abstract
In order to develop new Mg alloys for fracturing tools, Mg-Gd-Cu alloys containing profuse solute segregated stacking faults (SFs) were prepared by appropriate heat treatments and the effect of SFs on corrosion behavior of the alloys was investigated. It was found that the presence of SFs greatly changed corrosion behavior of the Mg-Gd-Cu alloys. Specifically, the alloys containing SFs presented higher initial corrosion rate due to the increased volume fraction of the cathodic phase associated with the SFs; while the rapid formation ability as well as uniform and complete distribution of corrosion films resulted in a lower average degradation rate.
Published Version
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