Workability studies on powder metallurgy pure iron preforms during hot forging under triaxial stress state condition

被引:0
作者
Narayanasamy R. [1 ]
Senthilkumar V. [2 ]
Pandey K.S. [3 ]
机构
[1] Department of Production Engineering, National Institute of Technology, Tiruchirappalli 620 015, Tamil Nadu
[2] Department of Mechanical Engineering, Jayaram College of Engg and Tech., Tiruchirappalli 621 014, Tamil Nadu
[3] Department of Metallurgical Engineering, National Institute of Technology, Tiruchirappalli 620 015, Tamil Nadu
关键词
Formability stress index; Fracture strain; Stress ratio parameter; Triaxial stress; Upsetting; Workability;
D O I
10.1007/s10999-007-9021-7
中图分类号
学科分类号
摘要
An experimental research work was performed for the understanding of the workability behavior of pure iron preforms produced through powder metallurgy route during hot forging under triaxial stress state condition. Relationship was established between the formability stress index and the axial strain. A relationship between the relative density and the axial strain was also established. Various stress ratio parameter under triaxial stress state condition which indicates the workability behavior of the material namely, (σ0/σeff), (σm/σeff) and (σz/σeff) were studied. An attempt has also been made to relate the stress ratio parameters with the relative density (R). © Springer Science+Business Media, Inc. 2007.
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页码:175 / 184
页数:9
相关论文
共 17 条
[1]  
Abdel-Rahman M., El-Sheikh M.N., Workability in forging of powder metallurgy compacts, J. Mater. Process. Technol, 54, pp. 97-102, (1995)
[2]  
Atkins A.G., Mai Y.W., Elastic and Plastic Fracture, (1985)
[3]  
Doraivelu S.M., Gegel H.L., Gunasekaran J.S., Malas J.C., Morugan J.T., A new yield function for compressible P/M Materials, Int. J. Mech. Sci, 26, 9-10, pp. 527-535, (1984)
[4]  
Gouveia B.P.P.A., Rodrigues J.M.C., Martins P.A.F., Fracture predicting in bulk metal forming, Int. J. Mech. Sci, 38, 4, pp. 361-372, (1996)
[5]  
Green R.J., A plasticity theory for porous solids, Int. J. Mech. Sci, 14, pp. 215-224, (1972)
[6]  
Jones P., Densification strategies for high endurance PM compacts, Int. J. Powder Metall, 33, 3, pp. 37-43, (1997)
[7]  
Kim K.T., Yang H.C., Hong S.T., Densification behavior of titanium alloy powder compacts at high temperature, Powder Metall, 44, 1, pp. 34-35, (2001)
[8]  
Kuhn H.A., Downey C.L., Deformation characteristics and plasticity theory of sintered powder materials, Int. J. Powder Metall, 7, 1, (1971)
[9]  
Kuhn H.A., Lee P.W., Erturk T., Fracture criterion for cold forming, Trans ASME. J. Eng. Mater. Tech, 95, pp. 213-218, (1973)
[10]  
Lee P.W., Kuhn H.A., Fracture in cold upset forging a criteron and model, Metal Trans, A4, pp. 969-974, (1973)