Enhancement of the Mechanical Properties of an Mg–Zn–Ca Alloy Using High‐Pressure Torsion1. Issue 12 (19th September 2015)

• Record Type: Journal Article
• Authors: Kulyasova, Olga B.; Islamgaliev, Rinat K.; Zhao, Yonghao; Valiev, Ruslan Z.
• Is Part Of: Advanced engineering materials. Volume 17:Issue 12(2015:Dec.)
• Page Start: 1738
• Page End: 1741
• Publication Date: 2015-09-19
• Subjects: Materials -- Periodicals; 620.11
• DOI: 10.1002/adem.201500176
• Languages: English
• ISSNs: 1438-1656

Abstract

Abstract : The structure and properties of an Mg–Zn–Ca alloy processed by high‐pressure torsion (HPT) are investigated. Microstructure is studied by transmission electron microscopy, scanning electron microscopy, and X‐ray diffraction. An enhanced microhardness of 990 MPa is observed in the HPT‐processed samples due to an uniform microstructure with a grain size of 150 nm. After additional annealing at 200 °C, the ultrafine‐grained alloy demonstrates an ultimate tensile strength of 270 MPa with a ductility of 9%. Abstract : The structure and properties of an Mg–Zn–Ca alloy processed by HPT are investigated. Microstructure is studied by TEM, SEM, and X‐ray diffraction. An enhanced microhardness of 990 MPa is observed in the HPT samples due to an uniform microstructure with a grain size of 150 nm. After additional annealing at 200 °C, the HPT samples demonstrates an UTS of 270 MPa with a ductility of 9%.