Microstructure, Mechanical Properties and Corrosion Behavior of Mg-1Zn-0.5Ca Alloy

Abstract:

Mg-1Zn-0.5Ca alloy was prepared by casting technology. The as-cast alloy was solution treated at 470°C for 24 h and aged at 175°C for 0-50 h. The microstructure, mechanical properties and electrochemical corrosion behavior of the alloys were investigated. The results showed that the average grain size of the as-cast alloy was 120-150 μm, and the precipitated phases were distributed uniformly in α-Mg grain. The as-cast alloy showed good mechanical properties. The tensile strength was 186 MPa, and ductility was 23%. A typical age softening responses was obtained during the aging treatment. In the electrochemical corrosion tests, corrosion of the alloys is improved in Hank’s solution and 3.5wt% NaCl solution after the solution and aged treatment. However, the aged treated alloys showed the better electrochemical corrosion resistance.

• Periodical: Advanced Materials Research (Volumes 311-313)
• Pages: 1735-1740
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.311-313.1735
• Online since: August 2011
• Authors: Xue Song Li, Li Dong Wang, Jian Wu Zhao, Jian Sheng Liu, Li Min Wang
• Keywords: Corrosion Resistance, Mechanical, Microstructure

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