Tensile properties of extruded ZK60–RE alloys

• Published in: Materials science & engineering. A, Structural materials : properties, microstructure and processing Vol. 349; no. 1-2; pp. 207 - 212
• Main Authors: Ma, Chunjiang, Liu, Manping, Wu, Guohua, Ding, Wenjiang, Zhu, Yanping
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 25.05.2003; Elsevier
• Subjects: Applied sciences; Elasticity. Plasticity; Exact sciences and technology; Extrusion; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology; Metals. Metallurgy; Microstructure; Rare earths (RE); Tensile properties; ZK60 alloy; Extrusion; ZK60 alloy; Microstructure; Rare earths (RE); Tensile properties; Cerium base alloys; Grain size; Scanning electron microscopy; Ultimate strength method; Impurity density; Rupture; Tensile property; Rare earth metal alloy; Experimental study; Rare-earth metal addition; Yield strength; Fractography
• ISSN: 0921-5093; 1873-4936
• DOI: 10.1016/S0921-5093(02)00740-2

ZK60–RE alloys were made by melting ZK60 alloy and cerium-rich rare earth (RE) metal in an electric furnace. The content of RE is 0, 0.5, 1, 1.5, 2, 3 wt.% RE, respectively. The influence of RE on microstructure and tensile mechanical properties of ZK60 magnesium alloys was studied. The results showed that cerium-rich misch metal (MM) had an obvious effect of reducing the grain size of the as-extruded ZK60 alloys. The ultimate and yield strengths of extruded ZK60–RE alloys were improved by the addition of RE. The ultimate and yield strength increased with increasing RE content in the range investigated. It is also found that the ultimate strength and yield strength decrease with increasing extrusion temperature. The improvement of tensile properties of ZK60–RE alloys was due to the extrusion texture and the fine microstructure induced by RE additions.