INVESTIGADORES
GALANO Marina Lorena
artículos
Título:
Microstructure evolution and mechanical properties of Al-Zn-Mg-Cu alloy reprocessed by spray-forming and heat treated at peak aged condition
Autor/es:
E.M. MAZZER; C.R.M. AFONSO; M. GALANO; C.S. KIMINAMI; C. BOLFARINI
Revista:
JOURNAL OF ALLOYS AND COMPOUNDS
Editorial:
ELSEVIER SCIENCE SA
Referencias:
Lugar: Amsterdam; Año: 2013 vol. 579 p. 169 - 173
ISSN:
0925-8388
Resumen:
Machining chips of the alloy AA7050 were reprocessed by spray forming followed by hot-extrusion and heat treatment. The spray-formed deposit presented a microstructure with hardening g0 precipitates within the matrix and equilibrium g precipitates at the grain boundaries, refined grains and low segregation of the main elements Zn, Cu and Mg. The final microstructure at peak aged condition is mainly composed by Guinier?Preston (GP) zones, g0 metastable, g equilibrium , Al3Zr dispersoids and the coarse Al7Cu2Fe intermetallic. A well-defined precipitation free zone along grain boundaries was not observed. Good mechanical properties were achieved.
