CAJ | 학술논문

采用Gleeble-3500热模拟实验机对TAll(Ti-8Al-1Mo-1V)钛合金进行变形温度为880～1010℃、应变速率为0.01～50 S~(-1)、变形程度为30%和50%的压缩变形实验,研究其在高温变形条件下的动态再结晶行为.基于定向金相测量.通过回归分析建立了TA11钛合金高温变形时初生α相平均晶粒尺寸、动态再结晶体积分数以及动态再结晶晶粒尺寸模型,模型的计算值与实验值的平均误差小于12%,能较好地描述材料在热加工过程中发生动态再结晶的动力学规律.
채용Gleeble-3500열모의실험궤대TAll(Ti-8Al-1Mo-1V)태합금진행변형온도위880～1010℃、응변속솔위0.01～50 S~(-1)、변형정도위30%화50%적압축변형실험,연구기재고온변형조건하적동태재결정행위.기우정향금상측량.통과회귀분석건립료TA11태합금고온변형시초생α상평균정립척촌、동태재결정체적분수이급동태재결정정립척촌모형,모형적계산치여실험치적평균오차소우12%,능교호지묘술재료재열가공과정중발생동태재결정적동역학규률.
The compression deformation test of TA11 (Ti-8Al-1Mo-1V) titanium alloy at 880～1010 ℃, strain rate between 0.01s~(-1) and 50 s~(-1), deformation of 30% and 50% was carried out using Gleeble-3500 thermal simulation machine, its dynamic recrystallization volume fraction and dynamic recrystallization grain size of TA11 titanium alloy in (α+β) field were established based on quantitative metallurgical technique using regression analysis. The average difference between the calculated and experimental values is less than 12%. The model can describe the law of the dynamic recrystallization kinetics of the material during thermal processing.