Fe对Zr基合金的非晶形成能力、热稳定性及力学性能的影响  

Effects of Fe on Glass Forming Ability,Thermal Stability and Mechanical Properties of Zr-Based Alloys

作　　者：李春燕[1,2] 寇生中[1,2] 刘广桥[1,2] 赵燕春[1,2] 郑宝超[1] 丁雨田[1,2] 

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：《稀有金属材料与工程》2012年第10期1790-1794,共5页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(50961008;51061008);国家"973"计划前期研究专项(2011CB612203)

摘　　要：用铜模吸铸法制备了Zr(65-x)Cu17.5Ni10Al7.5Fex(x=0,1,2,3,4,5,at%)块体合金,利用X射线衍射仪(XRD)、透射电镜(TEM)、同步热分析(DSC)、万能试验机和扫描电镜(SEM)研究了Fe对Zr基合金的非晶形成能力、热稳定性及力学性能的影响。结果表明:适量添加Fe元素有利于提高该合金的非晶形成能力和热稳定性,当Fe含量为x=2时,其内部结构为完全非晶结构,并且此成分具有较高的GFA和热稳定性(ΔTx=58K)。Fe元素的适量加入也有利于提高该合金的强度和塑性,其中x=2的块体非晶合金的抗压强度σf、断裂应变εf和塑性应变εp分别高达2338MPa、12.4%和2.0%。Zr（65-x） Cu17.5Ni10Al7.5 Fex bulk alloys with x=0,1,2,3,4,5 were prepared by copper mold casting method.Glass forming ability（GFA）,thermal stability and mechanical properties of the alloys were studied by X-ray diffraction（XRD）,transmission electron microscopy（TEM）,differential scanning calorimetry（DSC）,universal testing machine and scanning electron microscope（SEM）.The results show that appropriate Fe addition can enhance GFA,thermal stability and mechanical properties of the alloys.The structure of the alloy is completely amorphous when the Fe content is x=2,and the alloy exhibits high GFA and good thermal stability（△T x =58 K）.When x=0.2 the alloy possesses large compression strength（2338 MPa）,breaking strain（12.4%） and plastic deformation（2.0%）.

关 键 词：ZR基块体非晶合金 非晶形成能力 热稳定性 力学性能 塑性 

分 类 号：TG139.8[一般工业技术—材料科学与工程]