In the present work, the strengthening effect of the Fe-rich intermetallic phases in a 2219 aluminium alloy subjected to equal channel angular pressing (ECAP) has been studied. Three different deformation conditions, corresponding to the as-extruded, ECAP route A-1 pass and ECAP route A-2 passes were considered. Microstructural characterization has been performed by light microscopy, transmission electron microscopy and scanning electron microscopy observations. All the contributions to the alloy strengthening, including solid solution, dislocation boundary, very fine particle precipitation induced by the adiabatic heating, equilibrium θ = Al2Cu secondary phase particles and the effect of the Fe-rich intermetallics, are discussed in this work. The resulting strengthening was evaluated and modelled in Part II.
Microstructure and Intermetallic Strengthening in an Equal Channel Angular Pressed AA2219. Part I: Microstructure Characterization / Santecchia, E.; Mengucci, Paolo; Cabibbo, Marcello. - In: METALLOGRAPHY, MICROSTRUCTURE, AND ANALYSIS. - ISSN 2192-9270. - ELETTRONICO. - 3:3(2014), pp. 194-202. [10.1007/s13632-014-0134-8]
Microstructure and Intermetallic Strengthening in an Equal Channel Angular Pressed AA2219. Part I: Microstructure Characterization
E. Santecchia;MENGUCCI, Paolo;CABIBBO, MARCELLO
2014-01-01
Abstract
In the present work, the strengthening effect of the Fe-rich intermetallic phases in a 2219 aluminium alloy subjected to equal channel angular pressing (ECAP) has been studied. Three different deformation conditions, corresponding to the as-extruded, ECAP route A-1 pass and ECAP route A-2 passes were considered. Microstructural characterization has been performed by light microscopy, transmission electron microscopy and scanning electron microscopy observations. All the contributions to the alloy strengthening, including solid solution, dislocation boundary, very fine particle precipitation induced by the adiabatic heating, equilibrium θ = Al2Cu secondary phase particles and the effect of the Fe-rich intermetallics, are discussed in this work. The resulting strengthening was evaluated and modelled in Part II.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
