Orientation-dependent stored energies in hot deformed Al-2.5%Mg and their influence on recrystallization

Journal Article · Mon Jul 12 00:00:00 EDT 2004 · Acta Materialia

DOI:https://doi.org/10.1016/j.actamat.2004.03.037· OSTI ID:20634716

Guiglionda, G; Borbely, A; Driver, J H

The dislocation densities in individual texture components of a hot, plane strain compressed, Al-2.5%Mg alloy have been determined by high resolution X-ray diffraction using recent methods for peak broadening interpretation. After deformation at 400 deg. C and strains up to 1.5 dislocation densities range from 2 to 20 x 10{sup 13} m{sup -2}. Both high energy synchrotron (European synchrotron radiation facility, ESRF) transmission peak analysis and standard reflection line analysis show that the S {l_brace}1 2 3{r_brace}<4 1 2> component develops significantly higher stored energies than the cube, brass {l_brace}0 1 1{r_brace}<2 1 1> and Goss {l_brace}0 1 1{r_brace}<1 0 0> components. After subsequent annealing to partial recrystallization, EBSD orientation maps over large areas demonstrate that the high energy S component is preferentially consumed by recrystallization. It is also shown that the development of the cube recrystallization texture is due to a nucleation frequency advantage, function of the applied strain.

• OSTI ID: 20634716
• Journal Information: Acta Materialia, Vol. 52, Issue 12; Other Information: DOI: 10.1016/j.actamat.2004.03.037; PII: S135964540400196X; Copyright (c) 2004 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 1359-6454
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
ANNEALING
BACKSCATTERING
BRASS
DEFORMATION
DISLOCATIONS
ELECTRON DIFFRACTION
EUROPEAN SYNCHROTRON RADIATION FACILITY
LINE BROADENING
MAGNESIUM ALLOYS
ORIENTATION
RECRYSTALLIZATION
STORED ENERGY
STRAINS
SYNCHROTRONS
TEMPERATURE RANGE 0400-1000 K
X-RAY DIFFRACTION