Ti元素的添加对Zr基合金的非晶形成能力及热稳定性的影响  

Influence of Micro Ti on the Glass-Forming Ability and Thermal Stability of the Zr-Based Alloy

作　　者：寇生中[1,2] 郑宝超[1] 李娜[1] 黄文军[1] 陈延[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,兰州730050 [2]兰州理工大学有色金属合金省部共建教育部重点实验室,兰州730050

出　　处：《中国铸造装备与技术》2010年第1期6-8,共3页China Foundry Machinery & Technology

摘　　要：在水冷铜坩埚中采用铜型吸铸法制备成直径为3mm的Zr65-xCu17.5Ni10Al7.5Ti(xx=1,2,3,4,5)合金圆棒。采用X射线衍射(XRD)、差热分析(DSC)对Zr基合金的非晶形成能力、结构变化及热稳定性进行研究。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(Trg=0.64934,ΔTx=35);随着Ti含量的增加(x=2,3,4,5时)合金为完全非晶相,非晶的形成能力和热稳定性降低。而且Ti的加入也改变了合金中原子间的近程有序和原子排列。The alloy rods with diameters of 3.0 mm of Zr65-xCU17.5Ni10Al7.5Tix （x= 1,2,3,4,5） have been prepared by copper mold with suction casting method in water cooling crucible,of which the structure, glass-forming ability and thermal stability have been analyzed by X-ray diffraction （XRD） and differential thermal analysis （DSC） respectively, resulting in that complete metallic glasses with largest thermal stability and glass-forming ability occured with X=2（Trg=0.64934,△Tx=35） while with the increase of Ti（x= 2,3,4,5）the complete metallic glasses accompanyed reduced thermal stability and glass- forming ability. The addition of Ti also changed atoms in alloy with their average distance and range of order area.

关 键 词：大块非晶 非晶形成能力 热稳定性 

分 类 号：TG139.8[一般工业技术—材料科学与工程]