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.
Role of lattice strain on thermal stability of a nanocrystalline FeMo alloy / Molinari, Alberto; Libardi, Stefano; Leoni, Matteo; Scardi, Paolo. - In: ACTA MATERIALIA. - ISSN 1359-6454. - STAMPA. - 58:3(2010), pp. 963-966. [10.1016/j.actamat.2009.10.012]
Role of lattice strain on thermal stability of a nanocrystalline FeMo alloy
Molinari, Alberto;Libardi, Stefano;Leoni, Matteo;Scardi, Paolo
2010-01-01
Abstract
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.| File | Dimensione | Formato | |
|---|---|---|---|
|
Role of lattice strain on thermal stability of a nanocrystalline FeMo alloy.pdf
Solo gestori archivio
Tipologia:
Versione editoriale (Publisher’s layout)
Licenza:
Tutti i diritti riservati (All rights reserved)
Dimensione
463.34 kB
Formato
Adobe PDF
|
463.34 kB | Adobe PDF | Visualizza/Apri |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione
