第一性原理研究钛合金中的沉淀强化
程坤, 陈树明, 曹烁, 刘建荣, 马英杰, 范群波, 程兴旺, 杨锐, 胡青苗

Precipitation Strengthening in Titanium Alloys from First Principles Investigation
CHENG Kun, CHEN Shuming, CAO Shuo, LIU Jianrong, MA Yingjie, FAN Qunbo, CHENG Xingwang, YANG Rui, HU Qingmiao
表5 不同热处理条件下,Ti55521合金中的元素分配、α相体积分数及颗粒尺寸[31],以及根据实验获得的αβ相成分计算得到的剪切模量
Table 5 Element partitions, f and R of α phase precipitate[31], and G calculated with the experimental compositions of the α and β phases of Ti55521 alloys under various heat treatments
StatePhaseElement partition / (atomic fraction, %)f / %R / nmG / GPa
TiAlMoVCrFeCal.Mo Eq.
TMPα86.99.21.32.20.30.122 ± 33560.0856.40
β81.28.43.25.21.10.9--34.9735.20
Aged Iα86.511.30.21.50.30.238 ± 622561.9959.20
β75.36.54.88.43.21.8--41.1542.52
Aged IIα86.47120.11.20.20.0350 ± 342562.9660.41
β76.15.84.37.84.51.5--40.9142.23