研究了合金元素Cd含量对AM50-Y-0.6Sb镁合金的显微组织和腐蚀性能的影响.研究表明,AM50-Y-0.6Sb合金组织主要由α-Mg固溶体、β-Mg17 Al12相、Al2Y相、YSb相组成.随着Cd含量增加,合金组织逐渐细化,Cd固溶于基体不形成新相,当Cd含量为1％时,晶粒和析出相最为均匀细小分布.合金腐蚀速率和腐蚀电流密度随着Cd的增加而降低,而自腐蚀电位正移.当Cd含量为1％时,合金耐蚀性最佳,腐蚀速率仅有1.07 mg·cm-2·d-1,比未添加Cd合金降低了42.5％.
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