THE EFFECT OF NATURAL AGING ON THE EVOLUTION OF YIELD STRENGTH DURINGARTIFICIAL AGING FOR AL-MG-SI-CU ALLOYS

Authors
POOLE WJ LLOYD DJ EMBURY JD
Citation
Wj. Poole et al., THE EFFECT OF NATURAL AGING ON THE EVOLUTION OF YIELD STRENGTH DURINGARTIFICIAL AGING FOR AL-MG-SI-CU ALLOYS, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 234, 1997, pp. 306-309
Citations number
6
Categorie Soggetti
Material Science
Journal title
Materials science & engineering. A, Structural materials: properties, microstructure and processing → ACNP
ISSN journal
09215093
Volume
234
Year of publication
1997
Pages
306 - 309
Database
ISI
SICI code
0921-5093(1997)234:<306:TEONAO>2.0.ZU;2-M
Abstract
Tensile tests have been conducted at 77 and 293 K in order to examine the effect of natural ageing on the subsequent artificial ageing behav iour of the industrial alloy AA6111. The evolution of the yield stress as a function of ageing time at 180 degrees C was measured for sample s with no natural ageing time and a prolonged period of natural ageing (i.e. T4 material). The nature of the obstacles was characterized in terms of the yield stress temperature dependence by measuring the rati o of the yield stress at 293 K to the yield stress at 77 K. From these measurements, it was possible to characterize the variation in the ob stacle properties as a function of artificial ageing time. (C) 1997 El sevier Science S.A.