摘要
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/（cm^2 days）.
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/（cm^2 days）.
基金
supported by the National Natural Science Foundation of China(No.51474043)
the Ministry of Education of China(NSRFDR 20130191110018)
the Education Commission of Chongqing Municipality(KJZH14101)
