GH696合金动态再结晶模型

发布时间：2018-06-27 07:04

本文选题：GH合金 + 热模拟压缩　；参考：《中国有色金属学报》2017年08期

【摘要】：采用热模拟压缩试验研究GH696合金在变形温度为880~1020℃、应变速率为0.01~10.0 s~(-1)、变形程度为30%~60%条件下的高温变形行为。采用金相显微镜对GH696合金高温压缩变形后的显微组织进行观察。结果表明:较高的变形温度和较低的应变速率有利于GH696合金的动态再结晶。采用加工硬化率-流动应力曲线确定GH696合金的动态再结晶临界应变,应用Avrami方程建立GH696合金的动态再结晶体积分数模型,并根据合金的金相定量试验结果建立GH696合金的动态再结晶晶粒尺寸模型。
[Abstract]:The thermal deformation test was used to study the deformation behavior of GH696 alloy at a deformation temperature of 880~1020 C, the strain rate of 0.01~10.0 s~ (-1) and the deformation degree of 30%~60%. The microstructure of the GH696 alloy after high temperature compression was observed by metallographic microscope. The results showed that the higher deformation temperature and lower strain speed were observed. The dynamic recrystallization of GH696 alloy is beneficial to the dynamic recrystallization. The dynamic recrystallization critical strain of GH696 alloy is determined by the working hardening rate - flow stress curve. The dynamic recrystallization volume fraction model of GH696 alloy is established by Avrami equation. The dynamic recrystallization grain size model of GH696 alloy is established according to the results of the metallographic quantitative test of the alloy.
【作者单位】：西北工业大学材料学院;
【分类号】：TG132.3

【相似文献】