Nd元素对Mg-6Al镁合金组织及力学性能的影响  

Effect of Neodymium on Structure and Mechanical Properties of Mg-6Al Alloy

作　　者：毛祖莉[1] 黄晓锋[2] 朱凯[1] 阎峰云[2] 王松海 

机构地区：[1]兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室,兰州730050 [2]兰州理工大学有色金属合金及加工教育部重点实验室,兰州730050 [3]兰州飞行控制有限责任公司,兰州730050

出　　处：《中国铸造装备与技术》2008年第3期17-20,共4页China Foundry Machinery & Technology

基　　金：甘肃省自然科学基金项目项目编号:3ZS062-B25-026;甘肃省科技支撑计划项目项目编号:0708GKCA029;兰州理工大学博士基金SB01200406

摘　　要：研究表明:加入少量的Nd元素后,合金的铸态组织得到了细化,网状的Mg17Al12相逐渐变得断续、弥散分布,同时也出现了针状的新相;随着Nd元素含量的增加Mg-6Al镁合金的抗拉强度及伸长率也都得到了明显的提高;当Nd元素含量达到1.2%时,其力学性能最好,其抗拉强度最大,为220MPa,伸长率19.8%也为最大。The influence of neodymium additions on the mechanical properties and structure of Mg-6Al magnesium alloys has been investigated.The results showed that the structure is refined and netted Mg17Al12 phase change to be dispersal and imtermittent and acicular new phases appeared.The mechanical properties obtained obvious improvement as the increase of content of neodymium;the mechanical properties were the best with the content of neodymium 1.2%.The tensile strength of Mg-6Al-1.2Nd was the largest up to 220MPa and the elongation the largest up to 19.8%.

关 键 词：Nd元素 镁合金 显微组织 力学性能 

分 类 号：TG146.22[一般工业技术—材料科学与工程]