GH600合金薄板成形极限研究  

Research on Forming Limits of Superalloy GH600 Sheet

作　　者：张成祥[1] 陈明和[1] 雷晓晶 胡思嘉 吴亚凤[2] 

机构地区：[1]南京航空航天大学机电学院,南京210016 [2]西安航空发动机集团有限公司,西安710021

出　　处：《航空材料学报》2015年第6期35-40,共6页Journal of Aeronautical Materials

摘　　要：通过实验,获得了GH600合金薄板的成形极限图(FLD),建立了其成形极限图的函数模型,并将实验基础上获得的FLD函数模型与专用有限元软件DYNAFORM中利用Keeler公式自动生成的FLD作为模拟时破裂的判据,模拟研究了GH600合金筒形件的拉深和杯突实验过程,将模拟结果与实验结果进行对比。结果表明:利用Keeler公式自动生成的成形极限图与实验获得的FLD数据差别较大,实验获得的FLD作为DYNAFORM模拟时的破裂判据,能更准确的预测GH600合金薄板成形过程中的破裂问题。实验所得成形极限图(FLD)和所建立的函数模型为该类板材成形过程的数值模拟提供了重要的依据。The forming limit diagram（FLD） of superalloy GH600 sheet was determined through the experiment, and the function model was built. The deep drawing processes and eupping processes were simulated by using the function model of FLD based on the experi- ment, and the FLD was automatically produced by Keeler formular in DYNAFORM software as broken criterion. The deep drawing and cupping tests were also performed in order to validate simulated results. The results show that the auto Keeler FLD is quite different from the experimental data. When simulating with DYNAFORM, the breaking problem can be predicted more precisely in the forming process of GH600 by using the FLD based on experiment as the broken criterion.

关 键 词：GH600合金 成形极限图(FLD) 破裂判据 

分 类 号：TG146.15[一般工业技术—材料科学与工程]