论文部分内容阅读
研究了ＣＰ２７６合金薄板材料在１００～２５０℃时的高温拉伸性能和高温变形组织特征。实验结果表明：ＣＰ２７６合金在２００℃拉伸时的屈服强度可达室温屈服强度的７０％以上，显示良好的高温性能；高温变形时的强化与被切割的δ＇粒子重新恢复有序结构以及热激活形成的交滑移障碍有关；随着变形温度提高，时效前的预变形引起的强化作用减弱；高温变形时，由于位错交滑移和动态回复的结果，形成了以位错网络和胞状亚结构为特征的变形组织。
The high temperature tensile properties and high temperature deformation microstructure of CP276 alloy sheet were studied at 100 ~ 250 ℃. The experimental results show that the yield strength of CP276 alloy reaches to more than 70% of the room temperature yield strength at 200 ℃, which shows good high temperature performance. The strengthened and cut δ ’particles in high temperature deformation regain the ordered structure and heat Activation of the formation of cross-slip obstacles related to; as the deformation temperature increases, pre-aging pre-deformation caused by strengthening the role of weakening; high temperature deformation, due to dislocation cross-slip and dynamic recovery results, the formation of dislocation network and cell Sub-structure is characterized by the deformation of the organization.