铁元素添加对Cu基非晶合金结构及力学性能的影响  

Effects of Fe on Structure and Mechanical Properties of Cu-Based Amorphous Alloys

作　　者：崔立治 袁子洲[1] 张香云[1] 冯雪磊[1] 

机构地区：[1]兰州理工大学甘肃省有色金属新材料重点实验室,甘肃兰州730050

出　　处：《稀有金属材料与工程》2015年第11期2831-2835,共5页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(51061008)

摘　　要：利用铜模吸铸法制备了(Cu_(0.46)Zr_(0.44)Al_(0.08)Dy_(0.02))_(100-x)Fe_x(x=0,1,3,5,7)非晶合金,利用X射线衍射仪(XRD)、同步热分析仪(DSC)、透射电镜(TEM)、万能试验机和扫描电镜(SEM)研究了Fe元素添加对Cu基非晶合金结构及力学性能的影响。结果表明:Fe元素的适量添加有利于改善Cu_(46)Zr_(44)Al_8Dy_2块体非晶合金的结构,当添加原子分数为1%和3%Fe时,合金为完全非晶结构,并且出现富Fe相和富Cu相两相分离。Fe元素的适量添加有利于提高Cu_(46)Zr_(44)Al_8Dy_2合金的强度和塑性,当添加3%Fe时,块体非晶合金的抗压强度σ_f和塑性ε_p分别达到1835 MPa和0.5%。（Cu0.46Zr0.44Al0.08Dy0.02）100-xFex amorphous alloys with x=0,1,3,5,7 were prepared by a copper mold casting method.Amorphous structure and mechanical properties of the alloys were studied by X-ray diffraction（XRD）,differential scanning calorimetry（DSC）,Transmission electron microscopy（TEM）,universal testing machine and scanning electron microscope（SEM）.The results show that appropriate Fe addition can enhance structure of the amorphous alloys.The structure of the bulk alloy is completely amorphous when the Fe content is x=1 or 3,and apparent nanoscale phase separation occurs in the as-prepared alloys.When x=3 the alloy possesses large compression strength（1835 MPa） and plastic deformation（0.5%）.

关 键 词：CU基非晶合金 元素添加 相分离 力学性能 

分 类 号：TG139.8[一般工业技术—材料科学与工程]