Premium
Enhancement of the Mechanical Properties of an Mg–Zn–Ca Alloy Using High‐Pressure Torsion
Author(s) -
Kulyasova Olga B.,
Islamgaliev Rinat K.,
Zhao Yonghao,
Valiev Ruslan Z.
Publication year - 2015
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.201500176
Subject(s) - materials science , microstructure , alloy , indentation hardness , ultimate tensile strength , scanning electron microscope , transmission electron microscopy , annealing (glass) , grain size , metallurgy , torsion (gastropod) , composite material , nanotechnology , medicine , surgery
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%.