Numerical simulation of the hot forging of porous preforms in a die with an internal flash gutter

被引：0
作者：
G. A. Baglyuk
O. V. Mikhailov
机构：
[1] National Academy of Sciences of Ukraine,Frantsevich Institute for Problems of Materials Science
来源：
Powder Metallurgy and Metal Ceramics | 2012年 / 50卷
关键词：
hot forging; porosity; deformation; densification; numerical simulation;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The hot forging of porous preforms with an axial hole in a semiclosed die with an internal flash gutter is numerically simulated. The distribution of deformation and density over the cross-section of the preform is substantially different at separate stages of the process. The maximum axial and radial strains are observed near the flash gutter. Enlarging the compensation slot over the optimum size causes residual porosity in some areas of the forging.
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页码：683 / 689
页数：6
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[1]  
Pavlov VA(1993)An investigation of the processes of hot deformation of porous blanks of titanium, copper, and aluminum and optimization of them Powder Metall. Met. Ceram. 32 768-772
[2]  
Nosenko MI(1997)Modeling deformation of a porous blank in open-die forging Powder Metall. Met. Ceram. 36 459-461
[3]  
Baglyuk GA(1998)Consolidation of a porous material in hot pressing in a closed mold fitted with a compensator Powder Metall. Met. Ceram. 37 249-252
[4]  
Baglyuk GA(1995)Plastic strain of powder components in unclosed volumes Powder Metall. Met. Ceram. 34 247-252
[5]  
Serdyuk GG(1988)Finding an optimum shape of a porous blank in hot forging Powder Metall. Met. Ceram. 27 269-272
[6]  
Doroshkevich EA(2009)Optimization of the forming processes in hot forging of porous preforms Naukovi Notatki 25 4-8
[7]  
Gorokhov VM(1986)Densification and change in the shape of a hollow porous cylinder during hot compression in a container Powder Metall. Met. Ceram. 25 179-181
[8]  
Ryabov IN(1985)Distribution of density in the bulk forging of axisymmetric parts from metal powders Powder Metall. Met. Ceram. 24 20-23
[9]  
Zvonarev EV(1995)Modeling the process of upsetting a porous ring in a die with contact friction taken into account Powder Metall. Met. Ceram. 33 14-17
[10]  
Baglyuk GA(1976)Plasticity theory for porous metals Int. J. Mech. Sci. 18 285-291
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