【摘要】 在β单相区对TC18钛合金进行了固溶处理,研究了固溶温度及保温时间对β晶粒尺寸的影响。结果表明:固溶温度越高,保温时间越长,β晶粒的尺寸越大,但晶粒长大速率随保温时间的延长而逐渐减慢;通过回归分析建立了β晶粒尺寸与固溶温度和保温时间之间关系的回归方程;保温时间较短时,热力学因素和动力学因素共同影响晶粒的生长过程,随保温时间延长,动力学因素的影响逐渐减小。更多还原

【Abstract】 TC18 titanium alloy was solid-solution treated in the β phase region,and the effects of solid-solution temperature and holding time on the size of β grain were studied.The results show that the size of β grain increased with increase of solid-solution temperature and holding time,but the growth speed of the grain decreased with increase of holding time.Regression analysis was employed to establish regression equation between solid-solution temperature,holding time and the size of β grain.The growth process of grains was affected by thermodynamics and kinetics factors when holding time was shorter,the effect of the former gradually decreased with holding time更多还原