INVESTIGADORES
SCHVEZOV Carlos Enrique
artículos
Título:
ANALYSIS OF THERMAL AND STRUCTURAL PARAMETERS AND MICROHARDESS VARIATIONS IN DIFFERENT AL-CU ALLOYS DIRECTIONALLY SOLIDIFIED
Autor/es:
CARLOS M. RODRIGUEZ; ADRIANA E. CANDIA; CARLOS E. SCHVEZOV; MARIO R. ROSENBERGER; ALICIA ARES
Revista:
Light Metals
Editorial:
TMS
Referencias:
Lugar: Warrendale; Año: 2012 vol. 2012 p. 369 - 374
ISSN:
1096-9586
Resumen:
The columnar - to - equiaxed transition (CET) was investigated in
Al-Cu alloys (Al-1wt%Cu, Al-4.5wt%Cu, Al-15wt%Cu and Al-
33.2wt%Cu) solidified directionally from a chill face in a vertical
setup. The CET occurs when the temperature gradient in the melt
ahead of the columnar front reach critical values. Also, we
investigate correlations between structural parameters (grain size)
with Vickers microhardness measurements in the directionally
solidified samples. We observed that the Vickers microhardness is
greater in the equiaxed zone than in the columnar or columnar to
equiaxed transition (CET) zone, additionally, is greater on the
edges of the samples than in the centre. Also, we determined that
the grain size increases from the columnar to equiaxed structure.