TA15钛合金动态再结晶晶粒生长模型  

Modeling of Grain Growth for Dynamic Recrystallization of TA15 Titanium Alloy

作　　者：欧阳德来[1,2] 鲁世强[2] 崔霞[2] 吴超[2] 李鑫[2] 

机构地区：[1]南京航空航天大学,江苏南京210016 [2]南昌航空大学,江西南昌330063

出　　处：《稀有金属材料与工程》2010年第7期1162-1165,共4页Rare Metal Materials and Engineering

基　　金：江西省自然科学基金(2008GZC0041);江西省教育厅科技项目(GJJ08203)

摘　　要：从理论上分析TA15钛合金动态再结晶晶粒生长驱动力,提出动态再结晶晶粒生长等效反驱动力的概念。基于动态再结晶晶粒生长驱动力,建立(描述动态再结晶晶粒尺寸演变)的晶粒生长速率模型及晶粒尺寸模型。以TA15钛合金动态再结晶晶粒尺寸实验测定数据为例,采用遗传算法(GA)优化尺寸模型参数。结果表明,模型计算结果与实验数据能够达到较好的吻合,平均误差为7.4%。Driving forces of grain growth during dynamic recrystallization of TA15 titanium alloy were analyzed theoretically and the equivalent negative driving forces concept for dynamic recrystallization grain growth was also proposed. Based on driving forces of dynamic recrystallization grain growth,a grain growth rate model and a grain size model describing grain size evolution of TA15 titanium alloy during dynamic recrystallization were established. Taking the experimental data of dynamic recrystallization grain size of TA15 titanium alloy as an example,the size model parameters were optimized by genetic algorithm （GA）. The calculated results of grains size were in good agreement with the experimental values,whose average error was 7.4%

关 键 词：驱动力 晶粒生长模型 TA15钛合金 

分 类 号：TG146.23[一般工业技术—材料科学与工程]