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Título:
Tensile Properties versus structure of Directional Solidified Zn Base Alloys
Autor/es:
A.E. ARES; C.E. SCHVEZOV
Lugar:
Beijing, China
Reunión:
Conferencia; THE 16th INTERNATIONAL CONFERENCE ON CRYSTAL GROWTH (ICCG-16); 2010
Institución organizadora:
ICCG-16
Resumen:
The main objective of this study was to measure thermal (cooling rates, temperature gradients andvelocities of the liquidus and solidus isotherms), structural (grain size and primary and secondarydendritic arm spacings) and tensile parameters (maximum tensile strength (MTS), yield strength (YS) andultimate tensile strength (UTS)) in zinc aluminum (ZA) hypoeutectic (Zn wt%Al) and hypereutectic(Zn10 wt%Al, Zn15 wt%Al, Zn20 wt%Al, Zn30 wt%Al, Zn37 wt%Al and Zn50 wt%Al) alloys directionally solidified, which present columnar, equiaxed and columnar-to-equiaxed transition (CET)structures. The different types of structures were analyzed with optical and Scanning Electron Microscopy(SEM). Correlations between temperature gradient, cooling rate, local solidification time, grain size anddendritic spacings and tensile tests parameters are presented and discussed. The results show theinfluence of concentration, microstructural arrangement and thermal conditions on the mechanicalproperties during the solidification process.