| Titre : | The effect of microalloying additions of Au on the natural ageing of Al–Cu (2011) |
| Auteurs : | B. Klobes, Auteur ; O. Balarisi, Auteur ; M. Liu, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Acta materialia (Vol. 58 N° 19, Novembre 2010) |
| Article en page(s) : | pp. 6379–6384 |
| Note générale : | Métallurgie |
| Langues : | Anglais |
| Tags : | Aluminium alloys Al–Cu–Au Ageing Positron annihilation XANES |
| Résumé : | The influence of microalloying additions of Au to the binary Al–Cu system is investigated utilizing hardness measurements, positron annihilation spectroscopy and X-ray absorption spectroscopy. No room temperature ageing could be observed in the case of the ternary Al–Cu–Au alloy. Instead, quenched-in vacancies were trapped by Au atoms and thus could not catalyse the decomposition of the alloy. However, artificial ageing dissolves the complexes of Au and vacancies. A comparison between experimental and calculated absorption spectra shows that Au atoms did not agglomerate significantly during either natural or artificial ageing. |
| DEWEY : | 669 |
| ISSN : | 1359-6454 |
| En ligne : | http://www.sciencedirect.com/science/article/pii/S1359645410005033 |
