论文摘要
Martensitic transformations,mechanical properties,shape memory effect and superelasticity of Ti-xZr-（30-x）Nb-4Ta（x=15,16,17 and 18;at%） alloys were investigated.X-ray diffraction（XRD）,optical microscopy（OM） and transmission electron microscopy（TEM） results indicated that the Ti-16Zr-14Nb-4Ta,Ti-17Zr-13Nb-4Ta and Ti-18Zr-12Nb4Ta alloys were mainly composed of α″-martensite,while the Ti-15Zr-15Nb-4Ta alloy was characterized by predominant p phase.The reverse martensitic transformation temperatures increased when Nb was replaced by Zr,indicating stronger p-stabilizing effect for the former.The Ti-15Zr-15Nb-4Ta alloy displayed superelasticity during tensile deformation with a recovery strain of 3.51%.For the other three alloys with higher Zr content,the martensitic reorientation occurred during tensile deformation,resulting in shape memory recovery upon subsequent heating.The maximum shape memory effect was 3.46% in the Ti-18Zr-12Nb-4Ta alloy.
论文目录
文章来源
类型: 期刊论文
作者: Wen-Tao Qu,Hao Gong,Jun Wang,Yong-Sheng Nie,Yan Li
来源: Rare Metals 2019年10期
年度: 2019
分类: 工程科技Ⅰ辑
专业: 金属学及金属工艺
单位: School of Mechanical Engineering,Xi'an Shiyou University,School of Materials Science and Engineering,Beihang University,Beijing Advanced Innovation Centre for Biomedical Engineering,Beihang University,Lanzhou Seemine SMA Co.Ltd
基金: financially supported by the National Key R&D Program of China (No.2018YFC1106600),the Funding from the Industrial Transformation and Upgrading of Strong Base Project of China (No.TC150B5C0,03)
分类号: TG139.6
页码: 965-970
总页数: 6
文件大小: 1048K
下载量: 10