Microstructural development during equal channel angular pressing of hypo-eutectic Al-Si casting alloy by different processing routes
Garcia-Infanta, J. M.
Zhilyaev, A. P.
Ruano, O. A.
McNelley, T. R.
MetadataShow full item record
An as-cast Al–7 wt.% Si alloy was subjected to repetitive equal channel angular pressing (ECAP) using a 90◦ die at ambient temperature and following either route A, which involves monotonically increasing strain through a sequence of passes, or route BC, wherein the strains are redundant after every four passes. Microstructures were characterized by optical microscopy (OM), scanning electron microscopy (SEM) and orientation imaging microscopy (OIM). The shape changes of the microstructure constituents mirror the idealized straining for repetitive processing by these routes. Thus, the morphology and distribution of the eutectic constituent in processed materials reflect mainly geometrical effects, although elongated Si and Al5FeSi particles in the eutectic are also broken up. Grain refinement in the primary Al constituent is also strain-path dependent:grain subdivision combined with geometric effects is operative in material processed by route A, while grain subdivision alone predominates in material processed by route BC.
Showing items related by title, author, creator and subject.
Influence of microstructural stability on the creep mechanism of Al-7wt% Si alloy processed by equal channel angular pressing Orozco-Caballero, A.; Menon, S.K.; Cepeda-Jiménez, C.M.; Hidalgo-Manrique, P.; McNelley, T.R.; Ruano, O.A.; Carreño, F. (2014);A Na-modified, as-cast Al-7 wt% Si alloy was processed by equal channel angular pressing (ECAP) up to 8 passes by route A at ambient temperature using a 90 degree square section die, obtaining improved strength ductility ...
Strain path and microstructure evolution during severe deformation processing of an as-cast hypoeutectic Al-Si alloy García-Infanta, J.M.; Zhilyaev, A.P.; Carreño, F.; Ruano, O.A.; Su, J.Q.; Menon, S.K.; McNelley, T.R. (Springer, 2010);Abstract Microstructure evolution in an as-cast Na modified Al–7%Si (wt. pct.) alloy was examined during redundant and monotonic straining by repetitive equi-hannel angular pressing (ECAP) under ambient temperature ...
Anastasio, Onofrio A. (Monterey, California. Naval Postgraduate School, 2002-06);Currently, the microelectronics industry is transitioning from lead-containing to lead-free solders in response to legislation in the EU and Japan. Before an alternative alloy can be designated as a replacement for current ...