超塑性
材料科学
冶金
晶界滑移
动态再结晶
应变率
钛合金
消散
再结晶(地质)
合金
极限抗拉强度
变形(气象学)
打滑(空气动力学)
拉伸试验
复合材料
晶界
微观结构
热加工
热力学
地质学
古生物学
物理
作者
Xin Wang,Ge Zhou,Yue Men,Siqian Zhang,Haoyu Zhang,Feng Li,Lijia Chen
出处
期刊:Crystals
[MDPI AG]
日期:2022-02-16
卷期号:12 (2): 270-270
被引量:6
标识
DOI:10.3390/cryst12020270
摘要
Fine-grained Ti-6Al-4V titanium alloy plates were manufactured using a direct rolling approach, and a series of superplastic tensile tests were conducted at varying temperatures and strain rates. The maximum tensile elongation of 816% was obtained at 810 °C and 5 × 10−4 s−1, and the superplastic flow behavior was dominated by a strain-induced grain boundary slip. In addition, the superplastic behaviors of the alloy were investigated, and the α-and β-phase Gibbs free energy was calculated. The vital role of phase β in the transformation was discussed from a thermodynamical perspective. A power dissipation rate model of Ti-6Al-4V during the superplastic deformation was built and used to predict the energy changing laws in the dynamic recrystallization and grain boundary sliding during the superplastic deformation.
科研通智能强力驱动
Strongly Powered by AbleSci AI