Effect of Nd Content and Heat Treatment on Microstructure and Mechanical Properties of Mg-Zn-Nd Alloy

• Published in: Materials science forum Vol. 898; pp. 124 - 130
• Main Authors: Zhang, Jin Yang, Xu, Shu Min, Teng, Xin Ying, Ge, Xing Jing
• Format: Journal Article
• Language: English
• Published: Pfaffikon Trans Tech Publications Ltd 19.06.2017
• Subjects: Alloys; Elongation; Grain size; Heat treatment; Magnesium base alloys; Mechanical properties; Microstructure; Neodymium base alloys; Tensile strength; Ultimate tensile strength; Zinc base alloys; Mechanical Properties; Magnesium Alloys; Heat Treatment; Microstructure; Nd Content
• ISSN: 0255-5476; 1662-9752; 1662-9752
• DOI: 10.4028/www.scientific.net/MSF.898.124

In this paper, the microstructure and mechanical properties of the as-cast and heat treatment of Mg-Zn-Nd alloy was investigated. The alloy was manufactured by a conventional casting method, and then subjected to a heat treatment. The results showed that the microstructure of as-cast alloy was comprised of α-Mg matrix and Mg12Nd phase. With increase of Nd content, the grain size gradually decreased from 25.38 μm to 9.82 μm. The ultimate tensile strength and elongation at room temperature of the Mg94Zn2Nd4 alloy can be reached to 219.63 MPa and 5.31%. After heat treatment, part of the second phase dissolved into the magnesium matrix and the grain size became a little larger than that of the as-cast. The ultimate tensile strength was declined by about 2.5%, and the elongation was increased to 5.47%.