摘要
利用Gleeble-1500热模拟试验机对23Co13Ni11Cr3Mo超高强度钢进行了热压缩试验,建立了材料流变应力模型,采用Deform3D有限元软件对其模锻件锻造成形过程进行数值模拟,研究了不同工艺参数对锻件成形的影响。结果表明:适当增加变形温度,可有效降低材料的变形抗力,增强材料在模腔中的流动性;摩擦因子的减小,能够降低成形载荷,改善难变形区域的成形,使变形更为均匀;变形速率影响锻件的温升,其合理选择对锻件成形有一定影响。
The material flow stress model for 23Co13Ni11Cr3Mo ultra high strength steel has been established by hot compression tests on the Gleeble-1500 thermal simulation testing machine.The forging forming for 23Co13Ni11Cr3Mo ultra high strength steel has been simulated by Deform 3D FEM software,the influence of forging forming under different process parameters has been researched in this paper.The results show that appropriate increase of deformation temperature contribute to reduce the material deformation resistance,and improve the flowability of metal in the mould;Decrease of friction factor can reduce the forming load,improve the deformation of the difficult forming area,and make the deformation more uniform;Deformation rate influence the temperature rise of forging,a reasonable choice could influence the forging of forming to a certain extent.
出处
《热加工工艺》
CSCD
北大核心
2011年第17期15-18,共4页
Hot Working Technology
基金
国家973计划资助项目(2011CB706802)
国家重大专项资助项目(2009ZX04005-011)
关键词
超高强钢
流变应力模型
锻造工艺
数值模拟
ultra high strength steel
flow stress model
forging process
numerical simulation
