Artículos de revistas
Length Scale Of The Dendritic Microstructure Affecting Tensile Properties Of Al-(ag)-(cu) Alloys
Registro en:
1793-6578
International Journal Of Modern Physics B. WORLD SCIENTIFIC PUBL CO PTE LTD, n. 30, n. 3, p. .
0217-9792
WOS:000369340500003
10.1142/S0217979215502616
Autor
Duarte
RN; Faria
JD; Brito
C; Verissimo
NC; Cheung
N; Garcia
A
Institución
Resumen
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) The dependence of tensile properties on the length scale of the dendritic morphology of Al-Cu, Al-Ag and Al-Ag-Cu alloys is experimentally investigated. These alloys were directionally solidified (DS) under a wide range of cooling rates ((T)over dot), permitting extensive microstructural scales to be examined. Experimental growth laws are proposed relating the primary dendritic arm spacing, lambda(1) to (T)over dot. and tensile properties to lambda(1). It is shown that the most significant effect of the scale of lambda(1) on the tensile properties is that of the ternary alloy, which is attributed to the more homogeneous distribution of the eutectic mixture for smaller lambda(1) and by the combined reinforcement roles of the intermetallics present in the ternary eutectic: Al2Cu and nonequilibrium Ag3Al. 30
FAPESP [2012/08494-0, 2013/23396-7] CNPq [471581/2012-7, 475480/2012-0] Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)