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Metals 2017, 7(8), 289;

Analysis of Fatigue and Wear Behaviour in Ultrafine Grained Connecting Rods

Mechanical, Energetics and Materials Engineering Department, Public University of Navarre, Campus Arrosadía s/n, Pamplona 31006, Spain
Author to whom correspondence should be addressed.
Received: 3 July 2017 / Revised: 19 July 2017 / Accepted: 20 July 2017 / Published: 29 July 2017
(This article belongs to the Special Issue Fatigue of Intermetallics)


Over the last few years there has been an increasing interest in the study and development of processes that make it possible to obtain ultra-fine grained materials. Although there exists a large number of published works related to the improvement of the mechanical properties in these materials, there are only a few studies that analyse their in-service behaviour (fatigue and wear). In order to bridge the gap, in this present work, the fatigue and wear results obtained for connecting rods manufactured by using two different aluminium alloys (AA5754 and AA5083) previously deformed by severe plastic deformation (SPD), using Equal Channel Angular Pressing (ECAP), in order to obtain the ultrafine grain size in the processed materials are shown. For both aluminium alloys, two initial states were studied: annealed and ECAPed. The connecting rods were manufactured from the previously processed materials by using isothermal forging. Fatigue and wear experiments were carried out in order to characterize the in-service behaviour of the components. A comparative study of the results was made for both initial states of the materials. Furthermore, Finite Element Modelling (FEM) simulations were used in order to compare experimental results with those obtained from simulations. In addition, dimensional wear coefficients were found for each of the aluminium alloys and initial deformation states. This research work aims to progress the knowledge of the behaviour of components manufactured from ultrafine grain materials. View Full-Text
Keywords: fatigue; wear; ECAP; FEM fatigue; wear; ECAP; FEM

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Luri, R.; Luis, C.J.; León, J.; Fuertes, J.P.; Salcedo, D.; Puertas, I. Analysis of Fatigue and Wear Behaviour in Ultrafine Grained Connecting Rods. Metals 2017, 7, 289.

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