| Titre : | Role of lattice strain on thermal stability of a nanocrystalline FeMo alloy |
| Auteurs : | A. Molinari, Auteur ; S. Libardi, Auteur ; M. Leoni, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Acta materialia (Vol. 58 N° 3, Fevrier 2010) |
| Article en page(s) : | pp. 963-966 |
| Note générale : | Métallurgie |
| Langues : | Anglais |
| Index. décimale : | 669 (Métallurgie) |
| Tags : | Mechanical milling X-ray diffraction Nanocrystalline materials Iron alloy Grain growth |
| Résumé : |
The thermal stability of a nanocrystalline Fe–1.5 wt.% Mo powder milled with nano-SiO2 was investigated in situ by synchrotron radiation X-ray diffraction.
Crystallite size is stabilized by the grain-boundary strain, therefore grain growth starts only after a certain amount of this strain has been released. The phenomenon was rationalized by a micromechanics approach, which considers the equilibrium between forces acting on the grain boundary surface. |
| DEWEY : | 669 |
| ISSN : | 1359-6454 |
| En ligne : | http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%235556%232010%23999419996%231577807%23FLA%23&_cdi=5556&_pubType=J&_auth=y&_acct=C000070790&_version=1&_urlVersion=0&_userid=6909337&md5=952181ad53b74a31dd165bcbdf644bd7 |
