Effects of Ca Addition on the Mechanical Properties and Corrosion Behavior of ZM21 Wrought Alloys

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• 作者：Jiang Yang ; Jian Peng ; Min Li ; Eric A. Nyberg…
• 关键词：Microstructure ; Mechanical property ; Corrosion resistance ; Ca addition ; Mg alloy
• 刊名：Acta Metallurgica Sinica (English Letters)
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：30
• 期：1
• 页码：53-65
• 全文大小：
• 刊物主题：Metallic Materials; Spectroscopy/Spectrometry; Organometallic Chemistry; Tribology, Corrosion and Coatings; Nanotechnology; Characterization and Evaluation of Materials;
• 出版者：The Chinese Society for Metals
• ISSN：2194-1289
• 卷排序：30

文摘

The microstructures, mechanical properties, and corrosion resistance of ZM21 magnesium alloys with a wide range of calcium (Ca) addition (0.1–1.6 wt%) were investigated. Results showed that the mechanical properties and corrosion resistance were improved with Ca addition because of grain refinement and formation of Ca₂Mg₆Zn₃. However, these properties were deteriorated when Ca contents reached 1.6 wt%. The optimal Ca content of alloys was 0.7 wt%; alloy with this Ca content showed good mechanical performance and corrosion resistance, having a strength of 260 MPa, an elongation of 21.5%, and an average weight loss of 0.77 mg/(cm2 days).