Salcedo Pérez, Daniel
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Salcedo Pérez
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Daniel
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Ingeniería
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ISC. Institute of Smart Cities
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Publication Open Access Design, simulation and manufacturing of a connecting rod from ultra-fine grained material and isothermal forging(Elsevier, 2016) Fuertes Bonel, Juan Pablo; Luis Pérez, Carmelo Javier; Luri Irigoyen, Rodrigo; Salcedo Pérez, Daniel; León Iriarte, Javier; Puertas Arbizu, Ignacio; Ingeniería Mecánica, Energética y de Materiales; Mekanika, Energetika eta Materialen IngeniaritzaIn this research work, a study on the mechanical properties of isothermal forging for connecting rods is made from previously ECAP (Equal Channel Angular Pressing)-processed AA1050 and AA5083 aluminium alloys. This severe plastic deformation (SPD) process is used in order to achieve a starting material with a submicrometric structure, thus improving the mechanical properties of the part. In this study, the design and the experimentation process is shown, where this involves the design stage by finite element simulations, the experimental tests and the use of metallographic techniques for the required properties to be analysed. Itis observed thatthere is an improvementin the mechanical properties when the starting material is ECAP-processed before carrying out the isothermal forging. This improvement consists in an increase of 20% in the hardness of the final connecting rod which also possesses a microstructure grain size of 500 nm. To come to these conclusions,the results obtained with the connecting rods manufactured by isothermal forging from previously ECAP-processed material are compared with those conventionally manufactured. Therefore,the feasibility and the advantages ofthe industrialmanufacturing ofmechanical components by isothermal forging from ECAP-processed material are demonstrated here as mechanical properties are achieved, as well as a better flow of the material and at a lower forging temperature. In the existing bibliography, there are no research works dealing with the manufacturing of connecting rods from ultra-fine grained material and that is the reason why this present study is considered to be of scientific and technological interest, and therefore, it may be considered to be at the frontline of current knowledge.Publication Open Access Modelización y análisis del proceso de forja de componentes mecánicos obtenidos a partir de material nanoestructurado(2013) Salcedo Pérez, Daniel; Luis Pérez, Carmelo Javier; Ingeniería Mecánica, Energética y de Materiales; Mekanika, Energetika eta Materialen IngeniaritzaThis Ph. D. Thesis deals with the feasibility of manufacturing mechanical components with submicrometric and/or nanometric structure by means of materials previously SPD processed with ECAE. To this end, a preliminary study on the assessment of the previously ECAE processed AA5083 flow rules is made as a function of temperature and forging velocity. Subsequently, the design of the dies required for the forging of this material is carried out and experimental tests are performed with the equipment belonging to the Public University of Navarre in order to analyse the mechanical properties of the manufactured mechanical elements. In addition, finite element simulations of both traditional forging and isothermal forging are carried out comparing these results with those obtained in the real tests. It is shown that a high degree of accuracy is achieved in the results obtained. Furthermore, a comparative study is made between the traditional forging and the isothermal forging when different mechanical components are manufactured both annealed or previously ECAE processed. With the present Ph. D. Thesis, a complete and deep study is made on the forging of previously SPD processed material with ECAE. This widens the knowledge about this kind of materials and it demonstrates the feasibility of obtaining mechanical elements with submicrometric and/or nanometric structure.