厦门大学学报（自然科学版）2017，Vol.56Issue(1)：25-32,8.DOI:10.6043/j.issn.0438-0479.201604030
Ti-Sn和Ti-Ni二元系中bcc相互扩散系数的实验测定及动力学计算
Measurement of Interdiffusivities and Calculation of Kinetics in bcc Ti-Sn and Ti-Ni Binary Systems
摘要
Abstract
On the basis of Ti/Ti-7%Sn,Ti/Ti-9%Sn and Ti/Ti-6%Ni diffusion couples(7%,9%,6% were atomic fraction),respec-tively,interdiffusion coefficients in the bcc Ti-Sn and Ti-Ni binary alloys at the temperature of 1 273,1 373 and 1 473 K were evalua-ted by means of the Den Broeder method and electron probe micro-analyzer (EMPA).Based on various reported experimental diffu-sion coefficients and what was measured in this study,accurate atomic mobilities in the bcc Ti-Sn and Ti-Ni alloys were assessed via the diffusion controlled transformation (DICTRA)simulation package.Comparison between the calculated and measured diffusion coefficients indicated that most of the experimental information can be reproduced reasonably.The developed diffusion mobilities were further validated by the prediction of the mole fraction-distance profiles.关键词
Ti-Sn二元系/Ti-Ni二元系/扩散偶/扩散系数/扩散迁移率参数/DICTRAKey words
Ti-Sn binary system/Ti-Ni binary system/diffusion couples/diffusion coefficient/diffusion mobility/diffusion controlled transformation (DICTRA)分类
矿业与冶金引用本文复制引用
王翠萍,罗奕胜,卢勇,韩佳甲,郭毅慧,柳玉恒,刘兴军..Ti-Sn和Ti-Ni二元系中bcc相互扩散系数的实验测定及动力学计算[J].厦门大学学报（自然科学版）,2017,56(1):25-32,8.基金项目
国家自然科学基金青年科学基金(51301146) （51301146）
国家国际科技合作专项(2014DFA53040) （2014DFA53040）
