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Título del libro: Supplemental Proceedings: General Paper Selections
Título del capítulo: Microstructural and Mechanical Performance of Cold-Rolled Al Base Alloys

Autores UNAM:
SAID ROBLES CASOLCO; SOCORRO DEL CARMEN VALDEZ RODRIGUEZ;
Autores externos:

Idioma:
Inglés
Año de publicación:
2011
Palabras clave:

AlZnAg alloy; Mechanical properties; Microstructure


Resumen:

The Al base alloys could be strongly influenced by the microalloying elements, modifying the microstructural and mechanical performance. An Al alloy added with zinc and silver was studied in as-cast and cold-rolled conditions by means of tensile testing machine, scanning and transmission electron microscopy. The flow stress and elongation were improved by the alloying addition, especially by the Ag content. The Ag-solute in low concentration is homogenously distributed in the AlZn matrix, which should contribute to increase the deformation. However, a high content of Ag decreases the solubility and precipitate as AgZn3. This microstructural evolution influenced the deformation mechanism in aluminum alloys. In addition, microstructural performance of Al base alloys added with Zn and Ag show the presence of solid solution zinc-rich hexagonal closepacked (hep) crystal structure, named n-phase and a-Al solid solution with Zn dissolved into the matrix. The silver concentration in AlZn alloy modifies the e-type precipitates. © 2011 The Minerals, Metals & Materials Society.


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