Enhanced corrosion resistance of Mg alloy ZK60 after processing by integrated extrusion and equal channel angular pressing

By D. Orlov, K. Ralston, Nick Birbilis, Y. Estrin. 2011

284 citations recorded by the source corpus.

It was demonstrated in this work that the corrosion rate of Mg alloy ZK60 can be reduced through the use of an integrated process of extrusion and equal channel angular pressing concomitant with increased strength. The improvement in corrosion resistance, as measured by electrochemical experiments and immersion tests in NaCl electrolytes, was correlated with both grain refinement and the redistribution of Zn and Zr solutes within the microstructure. These microstructural changes impacted the relative anodic and cathodic reaction kinetics sustained by the alloy in a unique manner, whereby structural and chemical variations dictated the anodic reaction rates in the former and the cathodic rates in the latter. The observed decrease in the corrosion rate, combined with improved mechanical properties for ZK60, represents a scenario where two properties that are nominally inversely correlated can be improved simultaneously, offering an insight into how Mg can be unique in terms of its processing-property relationships.

Subfields: Biomaterials, Materials Chemistry, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/447d82c30a2100f2878753fe0ddade9082576afd

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In Biomaterials

In Materials Chemistry

In Mechanical Engineering

Citations in the corpus

Fundamentals and advances in magnesium alloy corrosion (2017, background): “The authors [145] suggested that the improvements in alloy properties were linked to grain refinement and the redistribution of zinc (Zn) and zirconium (Zr) solutes within the alloy microstructure.”