High-quality magnesium-based alloys with improved properties for engineering

Abstract

Purpose. To give a theoretical analysis and a reasonable choice of the main alloying elements for the development of magnesium alloys with a high level of properties. Methods of research. Metallographic and X-ray research methods. Determination of mechanical properties under tension (GOST 1497-84) and long-term strength at elevated temperatures (GOST 9651-84). Results. It is shown the relationship between the state diagrams and the melting point of the selected alloying elements with the heat resistance of magnesium alloys. Perspective elements for improvement of the heat resistance of Magnesium alloys are Nd, Ge, Ag, Y, Sc, Zr, Si, Ti and Hf. These elements form complex intermetallic phases, differed by topology and morphology. Under their influence macro- and micrograins of metal are grinded and the microhardness of structural components increases. As the of phase, the which the melting alloying elements. Scientific novelty. Based on an analysis of binary phase the atomic-electronic the a of the of mechanical and heat-resistant of