Using Multiple FSP Passes to Cure Onion Splitting of Mg Alloys Deformed at Elevated Temperatures

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)780-786
Journal / PublicationMaterials Transactions
Issue number4
Online published25 Mar 2007
Publication statusOnline published - 25 Mar 2007
Externally publishedYes


The investigation of high temperature mechanical properties of the friction stir processed AZ61 alloy with different passes shows that the one-pass processed AZ61 Mg alloy exhibits inferior superplastic deformation ability along the FSP forward traveling direction due to the onionring pre-mature splitting. The homogenous microstructure in the multi-pass friction stir processed Mg alloy can avoid the onion-ring splitting and eliminate the anisotropy behavior of high temperature mechanical properties.

Research Area(s)

  • elevated temperature deformation, friction stir processing, magnesium alloys, onion splitting