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α、β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
|
|
State | Phase | Element partition / (atomic fraction, %) | f / % | R / nm | G / GPa |
---|
Ti | Al | Mo | V | Cr | Fe | Cal. | Mo Eq. |
---|
TMP | α | 86.9 | 9.2 | 1.3 | 2.2 | 0.3 | 0.1 | 22 ± 3 | 35 | 60.08 | 56.40 | β | 81.2 | 8.4 | 3.2 | 5.2 | 1.1 | 0.9 | - | - | 34.97 | 35.20 | Aged I | α | 86.5 | 11.3 | 0.2 | 1.5 | 0.3 | 0.2 | 38 ± 6 | 225 | 61.99 | 59.20 | β | 75.3 | 6.5 | 4.8 | 8.4 | 3.2 | 1.8 | - | - | 41.15 | 42.52 | Aged II | α | 86.47 | 12 | 0.1 | 1.2 | 0.2 | 0.03 | 50 ± 3 | 425 | 62.96 | 60.41 | β | 76.1 | 5.8 | 4.3 | 7.8 | 4.5 | 1.5 | - | - | 40.91 | 42.23 |
|
|
|