INVESTIGADORES
ARES alicia esther
congresos y reuniones científicas
Título:
ANALYSIS OF THERMAL AND STRUCTURAL PARAMETERS AND MICROHARDNESS VARIATIONS IN DIFFERENT Al-Cu ALLOYS DIRECTIONALLY SOLIDIFIED
Autor/es:
CARLOS MARIA RODRIGUEZ; ADRIANA ELIZABET CANDIA; CARLOS ENRIQUE SCHVEZOV; MARIO ROBERTO ROSENBERGER; ALICIA ESTHER ARES
Lugar:
Orlando, FL, USA.
Reunión:
Congreso; 2012 TMS LIGHT METALS; 2012
Institución organizadora:
TMS (The Minerals, Metals & Materials Society)
Resumen:
The columnar - to - equiaxed transition (CET) was investigated inAl-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 verticalsetup. The CET occurs when the temperature gradient in the meltahead of the columnar front reach critical values. Also, weinvestigate correlations between structural parameters (grain size)with Vickers microhardness measurements in the directionallysolidified samples. We observed that the Vickers microhardness isgreater in the equiaxed zone than in the columnar or columnar toequiaxed transition (CET) zone, additionally, is greater on theedges of the samples than in the centre. Also, we determined thatthe grain size increases from the columnar to equiaxed structure.