Mg-10Gd-2Y-0.15Ti高强镁合金的铸造工艺及性能研究  

Study on Casting Technology and Properties of Mg-10Gd-2Y-0.15Ti High Strength Magnesium Alloy

作　　者：门超[1] MEN Chao(Chengde Petroleum College,Chengde 067000,China)

机构地区：[1]承德石油高等专科学校,河北承德067000

出　　处：《热加工工艺》2020年第17期72-74,共3页Hot Working Technology

基　　金：承德市科学技术研究与发展计划项目(201606A107)。

摘　　要：采用不同的浇注温度对Mg-10Gd-2Y-0.15Ti高强镁合金试样进行了铸造,并进行了显微组织、拉伸性能和耐腐蚀性能的测试与分析。结果表明:随浇注温度的升高,试样的强度先逐渐增大后减小,断后伸长率变化幅度较小,腐蚀电位先正移后逐渐负移,拉伸性能和耐腐蚀性能先提升再下降。在720℃浇注温度下试样的抗拉强度和屈服强度最大,腐蚀电位最正。高强镁合金试样的浇注温度优选720℃。The specimens of Mg-10 Gd-2 Y-0.15 Ti high-strength magnesium alloy were cast by using different casting temperatures,and the microstructure,tensile properties and corrosion resistance were tested and analyzed.The results show that with the increase of pouring temperature,the strength of the specimens increases first and then decreases,the elongation after break changes slightly,the corrosion potential shifts positively first and then negatively,and the tensile properties and corrosion resistance improve first and then decrease.At pouring temperature of 720℃,the tensile strength and yield strength of the samples are the highest,and the corrosion potential is the most positive.The pouring temperature of the high strength magnesium alloy is optimized at 720℃.

关 键 词：汽车 高强镁合金 浇注温度 显微组织 拉伸性能 腐蚀性能 

分 类 号：TG249[金属学及工艺—铸造] TG146.22[一般工业技术—材料科学与工程]