TY - JOUR
T1 - Influence of dendrite arm spacing on the thermal conductivity of an aluminum-silicon casting alloy
AU - Vázquez-López, C.
AU - Calderón, A.
AU - Rodríguez, M. E.
AU - Velasco, E.
AU - Cano, S.
AU - Colás, R.
AU - Valtierra, S.
N1 - Funding Information:
This work was partially supported by Consejo Nacio-nal de Ciencia y Tecnología (CONACyT), México. The authors would like to thank Eng. Blanca Zendejas for her valuable technical support. The support of Corporativo Nemak S.A. de C.V. is also acknowledged.
PY - 2000/1
Y1 - 2000/1
N2 - The photoacoustic technique and the thermal relaxation method were used to determine the thermal conductivity of some representative samples obtained from an aluminum-silicon casting alloy A319. This material was solidified with an imposed unidirectional thermal gradient to obtain samples with different microstructures characterized by the secondary dendrite arm spacing, which increases as the solidification rate decreases, It was found that the thermal conductivity of the alloy decreases with an increase in the secondary dendrite arm spacing and a decrease in the integral dendrite perimeter.
AB - The photoacoustic technique and the thermal relaxation method were used to determine the thermal conductivity of some representative samples obtained from an aluminum-silicon casting alloy A319. This material was solidified with an imposed unidirectional thermal gradient to obtain samples with different microstructures characterized by the secondary dendrite arm spacing, which increases as the solidification rate decreases, It was found that the thermal conductivity of the alloy decreases with an increase in the secondary dendrite arm spacing and a decrease in the integral dendrite perimeter.
UR - http://www.scopus.com/inward/record.url?scp=0033990001&partnerID=8YFLogxK
U2 - 10.1557/JMR.2000.0016
DO - 10.1557/JMR.2000.0016
M3 - Artículo
SN - 0884-2914
VL - 15
SP - 85
EP - 91
JO - Journal of Materials Research
JF - Journal of Materials Research
IS - 1
ER -