PLASTIC DEFORMATION BEHAVIOUR OF POROUS SINTERED STEELS | ||||
| International Conference on Aerospace Sciences and Aviation Technology | ||||
| Article 31, Volume 10, 10th International Conference On Aerospace Sciences & Aviation Technology, May 2003, Page 443-459 PDF (2.52 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/asat.2013.24457 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| R. I. EI-Soeudy1; G. L. Petrossian2; P. Besis3 | ||||
| 1Faculty of Technical Education, Mechanics Department, Suez Canal University, Egypt. | ||||
| 2Department of Mechanics and Machine Sciences, State Engineering University of Armenia, Yerevan, Armenia. | ||||
| 3Institute of Materials Science, Aachen University of Technology, Germany. | ||||
| Abstract | ||||
| Five different sintered iron base materials with increasing alloy content were compressed in incremental steps to measure the deformation resistance and the density changes during plastic deformation. Of each material five initial density levels were investigated. Both, density increase and deformation resistance can mathematically be described by a parabola as depending on natural strain. Following Shima's and Oyna'es yield criterion for plastic deformation of porous materials an equivalent stress-equivalent strain curve is established for each material as the basic material law to model the deformation behaviour of porous sintered steels e.g. in surface rolling simulations. | ||||
| Keywords | ||||
| Experimental stress (crexp), Experimental strain (Cexp), Relative density (Srel), Material parameter (n), Equivalent stress (6; 0, Equivalent strain (cw), Real density (p) | ||||
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