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Influence of Torsion Route on the Microstructure and Mechanical Properties of Extruded AZ31 Rods
Author(s) -
Song Bo,
Shu Xiaogang,
Pan Hucheng,
Li Guoqiang,
Guo Ning,
Liu Tingting,
Chai Linjiang,
Xin Renlong
Publication year - 2017
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201700267
Subject(s) - materials science , microstructure , rod , torsion (gastropod) , composite material , extrusion , metallurgy , medicine , alternative medicine , surgery , pathology
Torsion deformation is an effective and simple technique to tailor the mechanical properties of Mg alloys. In this study, the influences of torsion route on microstructure and mechanical properties of AZ31 rods are investigated. The maximum torsion angle is set as 180° and the two‐pass torsion at different torsion routes, twice‐successive unidirectional torsion (T A ) and reciprocating torsion (T B ), is used to process the Mg alloy rods. It is found that the mechanical properties and yield asymmetry are very sensitive to the torsion route. Route T A is more effective for the enhancement of compressive yield strength and the improvement of yield asymmetry, while route T B is more effective for the enhancement of tensile yield strength. It is mainly attributed to the different textural evolutions between the two torsion routes. The relevant mechanisms are addressed and discussed.