Microstructure, mechanical and corrosion properties of extruded milled magnesium powder

0549366 - FZÚ 2022 RIV CZ eng J - Journal Article
Dvorský, Drahomír - Kubásek, Jiří - Vojtěch, D.
Microstructure, mechanical and corrosion properties of extruded milled magnesium powder.
Manufacturing Technology. Roč. 20, č. 6 (2020), s. 708-713. ISSN 1213-2489
Institutional support: RVO:68378271
Keywords : magnesium * extrusion * mechanical properties * corrosion * powder metallurgy
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Method of publishing: Open access

This paper deals with the preparation of pure Mg by extrusion of milled powder. The milling process should lead to better homogeneity of microstructure and the disturbing of the oxide layer on the powder particles. Also, the input deformation energy in the milled powder should affect the deformation and recrystallization process during extrusion. In this paper, the influence of extrusion temperature on microstructure, mechanical, and corrosion properties is evaluated. Higher extrusion temperature leads to the larger deformed grains in the extrusion direction and higher tensile strengths. On the other hand, the plasticity and compressive yield strengths are reduced with higher extrusion temperatures. Corrosion properties are negatively affected by the iron inclusions incorporated in the structure during milling. Otherwise, corrosion resistance decreases with increasing extrusion temperature due to the grain size.
Permanent Link: http://hdl.handle.net/11104/0325379