Fatigue life and endurance limit of Metal Matrix Composites (MMCs), reinforced with ceramic particles, have been remarkably increased by means of thin Ti coatings sputtered at room temperature. The method has been successfully tested for composites of Al alloys (6061, A359, 2618) with different reinforcement particles (Al2O3, SiC). Some alloys were prepared by molten metal process, others by powder metallurgy. The positive effect has been observed also by fatigue tests carried out at 200°C, a temperature of interest for the industrial applications of these materials. The improvement of fatigue characteristics of MMCs by Ti coatings has been ascribed to the sealing of external defects which retards crack initiation.

Influence of Ti coatings on the fatigue behaviour of Al-matrix MMCs, Part I: fatigue tests and material characterization

SILI, Andrea Mariano
2005

Abstract

Fatigue life and endurance limit of Metal Matrix Composites (MMCs), reinforced with ceramic particles, have been remarkably increased by means of thin Ti coatings sputtered at room temperature. The method has been successfully tested for composites of Al alloys (6061, A359, 2618) with different reinforcement particles (Al2O3, SiC). Some alloys were prepared by molten metal process, others by powder metallurgy. The positive effect has been observed also by fatigue tests carried out at 200°C, a temperature of interest for the industrial applications of these materials. The improvement of fatigue characteristics of MMCs by Ti coatings has been ascribed to the sealing of external defects which retards crack initiation.
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11570/1429251
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 3
  • ???jsp.display-item.citation.isi??? 2
social impact