Mg基非晶合金的形成能力和力学性能分析  

Formation Ability and Mechanical Properties of Mg-based Amorphous Alloys

作　　者：李林[1] 寇生中[1,2] 高凯雄[1] 刘广桥[1] 尚沙沙[1] 

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,甘肃兰州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,甘肃兰州730050

出　　处：《铸造工程》2011年第6期21-23,共3页Foundry Engineering

摘　　要：在水冷铜坩埚中采用铜型吸铸法制备直径为3mm的棒状Mg81Zn17Ca2、Mg63Zn32Ca5、Mg65Zn30Ca5合金材料，利用X射线衍射仪（XRD）和扫描电子显微Mg14Zn22Ca64、镜（SEM）等对Mg基非晶合金的形成能力和力学性能进行研究。结果表明：Mg65Zn30Ca5的非晶形成能力最强，Mg63Zn32Ca5和Mg14Zn22Ca54次之，Mg8iZn17Ca2最弱。Mg65Zn30Ca5力学性能519MPa；Mg811Zn17Ca2次之，约为493MPa；Mg63Zn32Ca5和Mg14Zn22Ca64最好，断裂强度最大约为断裂强度都较低。四种成的分的Mg-Zn-Ca合金均为脆性断裂，几乎没有塑性应变。The alloys rods with diameters of 3.0 mm of Mg81Zn17Ca2, Mg14Zn22Ca64, Mg63Zn32Ca5 and Mg65Zn30Ca5 were prepared by copper mold with suction casting method in water cooling crucible. Formation ability and mechanical properties of Mg-based amorphous alloys were analyzed mainly by X-ray diffraction（XRD） and scanning electric microscopy（SEM）. The results show that： the amorphous formation ability of Mg65Zna0Ca5 is best, Mg63Zn32Ca5 and Mg14Zn22Ca64 followed, Mg81Zn17Ca2 is weakest. The mechanical properties of Mg65Zn30Ca5 is best, with breaking strength about 519 MPa, MgszZn17Ca2 followed, about 493 MPa, the breaking strength of Mg63Zn32Ca5 and Mg14Zn22Ca64 is low. Four different elements of Mg-Zn-Ca alloys are brittle fracture, almost no plastic strain.

关 键 词：非晶合金 形成能力 力学性能 断裂强度 

分 类 号：TB331[一般工业技术—材料科学与工程]