Microstructure and mechanical properties of the UFG magnesium alloy Mg-1%Ca
Journal
Materials Science Forum
Journal Volume
1016 MSF
Pages
768-773
Date Issued
2021
Author(s)
Abstract
The influence of grain refinement by high pressure torsion (HPT) on microstructure of the Mg-1%Ca alloy was investigated by scanning and transmission electron microscopy. To The microhardness measurements and tensile tests of small samples were used to determine the mechanical properties of UFG samples. It was found that a uniform structure with an average grain size of 210 nm processed by HPT lead to high microhardness equal to 100 HV. Investigations of thermal stability demonstrated that additional heat treatment of the UFG samples at 250 oC provides good combination of high strength of 245 MPa and ductility of 4%. ? 2021 Trans Tech Publications Ltd, Switzerland.
Subjects
Calcium alloys; Grain refinement; Grain size and shape; Heat treatment; High pressure effects; High resolution transmission electron microscopy; Magnesium metallography; Manufacture; Microhardness; Microstructure; Scanning electron microscopy; Tensile testing; Torsional stress; Average grain size; High pressure torsions; High strength; Microhardness measurement; Microstructure and mechanical properties; Scanning and transmission electron microscopy; Small samples; Uniform structure; Magnesium alloys
SDGs
Type
conference paper