Adorno, A. T.Silva, RAG2014-05-202014-05-202003-01-01Journal of Thermal Analysis and Calorimetry. Dordrecht: Kluwer Academic Publ, v. 73, n. 3, p. 931-938, 2003.1388-6150http://hdl.handle.net/11449/25397The effect of 4 mass% Ag addition on the thermal behavior of the Cu-9 mass% Al alloy was studied using differential scanning calorimetry (DSC), optical microscopy (OM), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX) and X-ray diffractometry (XRD). The results showed that the presence of silver causes (Cu)-alpha+(alpha+gamma1)-->(Cu)-alpha+beta transformation to occur in two stages. In the first one, part of the produced beta phase combines with the precipitated Ag to give a silver-rich phase and in the second one the transformation is completed. The formation of this silver-rich phase seems to be enhanced at very low cooling rates.931-938engCu-Al alloysphase transformationssilver additionthermal behaviorArtigo10.1023/A:1025863404768WOS:000185463800024Acesso restrito