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Fatigue cycles and performance evaluation of accelerating aging heat treated aluminum semi solid materials designed for automotive dynamic components

Attia Mohamed, Ragab Khaled Ahmed, Bouazara Mohamed et Chen X-Grant. (2020). Fatigue cycles and performance evaluation of accelerating aging heat treated aluminum semi solid materials designed for automotive dynamic components. Applied Sciences, 10, (9), p. 1-15.

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URL officielle: http://dx.doi.org/doi:10.3390/app10093008

Résumé

The A357-type (Al-Si-Mg) aluminum semi solid casting materials are known for their excellent strength and good ductility, which make them materials of choice, preferable in the manufacturing of automotive dynamic mechanical components. Semi-solid casting is considered as an effective technique for the manufacturing of automotive mechanical dynamic components of superior quality performance and efficiency. The lower control arm in an automotive suspension system is the significant mechanical dynamic component responsible for linking the wheels of the vehicle to the chassis. A new trend is to manufacture this part from A357 aluminum alloy due to its lightweight, high specific strength, and better corrosion resistance than steel. This study proposes different designs of a suspension control arm developed, concerning its strength to weight ratio. Furthermore, this study aims to investigate the effect of accelerating thermal aging treatments on the fatigue life of bending fatigue specimens manufactured from alloy A357 using the Rheocasting semi-solid technology. The results revealed that the multiple aging cycles, of WC3, indicated superior fatigue life compared to standard thermal aging cycles. On the other hand, the proposed designs of automotive suspension control components showed higher strength-to-weight ratios, better stress distribution, and lower Von-Mises stresses compared to conventional designs.

Type de document:Article publié dans une revue avec comité d'évaluation
Volume:10
Numéro:9
Pages:p. 1-15
Version évaluée par les pairs:Oui
Date:26 Avril 2020
Sujets:Sciences naturelles et génie > Génie
Sciences naturelles et génie > Génie > Génie des matériaux et génie métallurgique
Sciences naturelles et génie > Sciences appliquées
Département, module, service et unité de recherche:Départements et modules > Département des sciences appliquées > Module d'ingénierie
Mots-clés:low/high fatigue cycles, aluminum semi-solid, design analysis, finite elements, cycles de fatigue faible/élevée, aluminium semi-solide, analyse de conception, éléments finis
Déposé le:03 sept. 2020 00:38
Dernière modification:03 sept. 2020 00:38
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