A texture simulation method is described for some complex plane strain deformation paths during hot shaping of FCC metals. The method employs both finite element calculations and a polycrystal plasticity model based on the Relaxed-Constraints (RC) Taylor hypothesis and a viscoplastic constitutive law. We have considered the {111} slip systems and the {100}, {110}, {112} non-octahedral slip systems. The finite element codes simulate the strain paths of material flow during a shaping process. The local velocity gradients, expressed in the macroscopic reference coordinates, are rewritten in the local flow line coordinates using a kinematic analysis for steady-state flow. Secondly, for the diAerent deformation paths, the RC polycrystal plasticity model is used to numerically simulate the local deformation texture evolutions as a function of depth. Texture simulations are carried out for two deformation processes combining hot compression and shear: extrusion and reversible rolling. For extrusion, the simulated pole figures and ODFs show the typical texture variations through the thickness of an extruded 6082 aluminium alloys, i.e. (b-fibre in the centre and a TD rotated copper component near the surface. It is shown that hot reversible rolling should develop a strong pure shear texture {001} near the surface. # 2000 Elsevier Science Ltd. All rights reserved.
[1]
R. L. Hazif,et al.
Cross-slip on {110} planes in aluminum single crystals compressed along 〈100〉 axis
,
1975
.
[2]
J. Martín,et al.
A study of (001) glide in [112] aluminium single crystals. II: Microscopic mechanism
,
1987
.
[3]
T. Furu,et al.
Texture Evolution during Extrusion of Flat AA6060 and AA6082 Aluminium Profiles
,
1998
.
[4]
Julian H. Driver,et al.
A Viscoplastic Simulation of Texture Evolution during Extrusion of an Aluminium Alloy
,
1998
.
[5]
Jean-Luc Martin,et al.
II. Microscopic mechanism
,
1988
.
[6]
C. Maurice,et al.
Hot rolling textures of f.c.c. metals—Part I. Experimental results on Al single and polycrystals
,
1997
.
[7]
Gorti B. Sarma,et al.
Texture predictions using a polycrystal plasticity model incorporating neighbor interactions
,
1996
.
[8]
C. Maurice,et al.
Hot rolling textures of f.c.c. metals—Part II. Numerical simulations
,
1997
.
[9]
D. C. Dashfield.
HER MAJESTY'S STATIONERY OFFICE
,
1954
.
[10]
Alan Needleman,et al.
Material rate dependence and localized deformation in crystalline solids
,
1983
.
[11]
P. Van Houtte,et al.
Coupled FEM and texture modelling of plane strain extrusion of an aluminium alloy
,
1997
.