Y元素添加对Zr基非晶形成能力和力学性能的影响  

Glass Forming Ability and Mechanical Property of Zr-based Alloy with the Addition of Yttrium

作　　者：寇生中[1,2] 黄文军[1] 郑宝超[1] 陈延[1] 索红莉[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]北京工业大学材料学院国家教育部功能材料重点实验室,北京100022

出　　处：《铸造技术》2010年第11期1429-1431,共3页Foundry Technology

摘　　要：在水冷铜坩埚中采用铜模吸铸法制备成直径为3mm的Zr65-xCu17.5Ni10Al7.5Yx(x=0、2、4at.%)合金圆棒。采用X射线衍射(XRD)、差热分析(DSC)和微机控制电子式万能试验机等技术手段对Zr基合金的非晶形成能力,热稳定性和力学性能进行研究。结果表明,当x=2时合金为完全非晶组织,此时非晶具有较高的热稳定性和非晶形成能力(△Tx=69K),此时断裂强度σmax为1518MPa,塑性变形εp为1.5%。随着Y含量的增加,非晶的形成能力、热稳定性和力学性能都有所降低。Alloy rods in diameter of 3.0 mm of Zr65-xCu17.5Ni10Al7.5Yx（x=0、2、4） were prepared by suction casting process with copper mold in water cooling crucible. The glass forming ability, thermal stability, mechanical properties and fracture surface were analyzed by X-ray diffraction （XRD）, differential scanning measuring instrument （DSC）,WDW-100 J pressure testing machine and scanning electron microscopy（SEM） respectively. The results indicated that the sample was fully metallic glasses with x=2,which had the largest thermal stability, the glass-forming ability（△Tx=69 K） and fracture strength（σmax=1 518 MPa,εp=1.5%）.Along with the increase of the content of Y,glass forming ability, thermal stability and mechanical properties were reduced.

关 键 词：ZR基合金 非晶 玻璃形成能力 

分 类 号：TG139.8[一般工业技术—材料科学与工程]