钛合金叶片等温精锻时晶粒尺寸的数值模拟  

Finite Element(FE) Simulation of Grain Size During Isothermal Forging of Airfoil Blade

作　　者：李淼泉[1] 薛善坤[1] 陈胜晖[1] 李晓丽[1] 王海荣[2] 苏少博[2] 申立创 

机构地区：[1]西北工业大学材料学院,西安710072 [2]西安航空发动机(集团)有限公司,西安710021

出　　处：《机械科学与技术》2004年第11期1380-1381,1386,共3页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家重大基础研究计划项目(G2000067206);首届高校青年教师奖;航空基础科学基金(99H53109);西北工业大学优秀博士论文创新基金(CX200305)的资助。

摘　　要：将有限元法与Yada微观组织模型结合 ,对TC6合金叶片在等温锻造过程中初生α晶粒尺寸的演变进行了数值模拟 ,详细给出了TC6合金叶片在等温锻造过程中初生α相的分布及晶粒尺寸的变化。研究结果表明 :压下量、变形温度和打击速度对初生α晶粒尺寸有显著影响 ,工件与模具间的摩擦对初生α晶粒尺寸的影响较小。In this paper, grain size of the α phase is computed during isothermal forging of the TC6 aerofoil blade by combining finite element method with the Yada′s model of grain size. The present results illustrate the grain size and distribution of the α phase during isothermal forging of the TC6 aerofoil blade in detail. The computed results show that height reduction, deformation temperature, and hammer velocity have greater effect on grain size of the α phase than friction between billet and die.

关 键 词：TC6合金 叶片 晶粒尺寸 数值模拟 

分 类 号：TG31[金属学及工艺—金属压力加工]