Evaluation of residual stresses induced by fatigue cycling in AA359+20%SiCp brake drums using neutron diffraction
Gianni Albertini*, Fabrizio Fiori**, Alessandra Giuliani**, Franco Rustichelli** *Dipartimento di Fisica e Ingegneria dei materiali e del Territorio - Università Politecnica delle Marche and Istituto Nazionale per la Fisica della Materia - U.d.R. Ancona, Via Brecce Bianche, 60100 Ancona, Italy **Istituto di Scienze Fisiche - Università Politecnica delle Marche and Istituto Nazionale per la Fisica della Materia - U.d.R. Ancona, Via Ranieri 65, 60131 Ancona, Italy
Annals 3 No. 7, 2003 pages 260-264
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abstract Neutron diffraction experiments for the evaluation of residual stresses induced by fatigue cycling in metal-matrix composite (MMC) automotive components are presented. The studied components are three brake drums, manufactured by Teksid a/Centro Ricerche FIAT. One of them was used to study the residual stress state in the as-cast condition. The other two brake drums were submitted to fatigue cycling („bench tests”), respectively not-leading and leading to failure. The macro- and micro-stress components are evaluated and compared for the three studied components. Key words: neutron diffraction, residual stresses, metal matrix composites