Superior Properties of Mg-4Y-3RE-Zr Alloy Prepared by Powder Metallurgy

• Published in: Journal of materials science & technology Vol. 33; no. 7; pp. 652 - 660
• Main Author: Ji í Kubásek Drahomír Dvorsky Miroslav avojsky Dalibor Vojtěch Nad＇a Beronská Michaela Fousová
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.07.2017
• Subjects: Corrosion; Magnesium alloys; Mechanical properties; Powder metallurgy; REEs (rare earth elements); 制备; 力学性能; 生物降解; 粉末冶金合金; 粉末冶金法; 耐腐蚀性能; 航空工业; 镁合金; Mechanical properties; Corrosion; Powder metallurgy; REEs (rare earth elements); Magnesium alloys
• ISSN: 1005-0302; 1941-1162
• DOI: 10.1016/j.jmst.2016.09.019

Magnesium alloys are important materials for application in the automotive and aviation industries. During the last few years, the number of possible applications as biodegradable implants in medicine has grown. Mg-RE（rare earth） alloys belong to the most advanced group of products, offering the best combination of mechanical properties and corrosion resistance. Among these materials, WE43（Mg-Y-Nd）is a very well-known commercial alloy that has been extensively studied for applications at increased temperatures and also in organisms. Although this material has been described, there are still possibilities to improve its properties and subsequently expand its applicability. Powder metallurgy has already been used for the preparation of magnesium alloys with superior mechanical properties and occasionally superior corrosion properties. Therefore, the present paper is oriented toward the preparation of Mg-4Y-3RE-Zr（WE43） alloy by the powder metallurgy technique（WE43-PM） and comparison of the final properties with the product of extrusion of as-cast ingot（WE43-IM）. Our processing leads to a partial improvement in the mechanical properties and superior corrosion resistance of WE43-PM. The texture strength of WE43-PM was low, and therefore, anisotropy of mechanical properties was suppressed.