The effect of texture on grain boundary character distribution (GBCD) in thermomechanically processed oxygen-free high-conductivity copper has been investigated. Copper samples were cold rolled to a reduction in thickness of 50% and then annealed for 60 min in the range of 400–600°C. GBCD and texture were measured using electron backscatter diffraction. The fraction of special boundaries (Σ3, Σ9, and Σ27) varied from 59% to 71%, with the maximum in the sample annealed at 500°C. The results indicate that cold rolling provided a strong texture of brass type. It was found that the sample annealed at 500°C have texture components of cube, Goss, rotated-Goss, and Y orientations. These texture components were in relation with the formation of annealing twins and Σ3 boundaries. It was also shown that twin-induced GBCD evolution occurred by strain-induced boundary migration, multiple twinning, and conventional recrystallization. Annealing at 600°C caused full recrystallization and grain growth, showing a strong cube recrystallization texture. The grain growth was found to hinder the formation of special boundaries.

References

References
1.
Dingley
,
D. J.
, and
Randle
,
V.
, 1992, “
Microtexture Determination by Electron Back-Scatter Diffraction
,”
J. Mater. Sci.
,
27
(
17
), pp.
4545
4566.
2.
Randle
,
V.
, 2003,
Microtexture Determination and Its Applications
,
2nd ed.
,
The Institute of Materials Minerals and Mining
,
London, United Kingdom
.
3.
Adams
,
B. L.
, 1993, “
Orientation Imaging Microscopy: Application to the Measurement of Grain Boundary Structure
,”
Mater. Sci. Eng. A
,
166
(
1
), pp.
59
66.
4.
Michael
,
J. R.
, and
Goehner
,
R. P.
, 2001, “
Electron Backscatter Diffraction: A Powerful Tool for Phase Identification in the SEM
,”
Mater. Res. Soc. Symp. Proc.
,
589
, pp.
39
49.
5.
Goux
,
C.
, 1974. “
Grain Boundary Structures: Crystallographic Parameters and Methods for Calculating Structures
,”
Can. Metall. Q.
,
13
(
1
), pp.
9
31
.
6.
Watanabe
T.
, 1984, “
Approach to Grain Boundary Design for Strong and Ductile Polycrystals
,”
Res Mech.
,
11
(
1
), pp.
47
84.
7.
Palumbo
G
, and
Aust
,
P. G
, 1990, “
Structure-Dependence of Intergranular Corrosion in High Purity Nickel
,”
Acta Metall. Mater.
,
38
(
11
), pp.
2343
2352.
8.
Crawford
,
D. C.
, and
Was
,
G. S.
, 1992, “
The Role of Grain Boundary Misorientation in Intergranular Cracking of Ni-16Cr-9Fe in 360°C Argon and High-Purity Water
,”
Metall. Trans. A
,
23
(
4
), pp.
1195
1206
.
9.
Lim
,
L. C.
, and
Raj
,
R.
, 1984, “
On the Distribution of Sigma for Grain Boundaries in Polycrystalline Nickel Prepared by Strain-Annealing Technique
,”
Acta Metall.
,
32
(
8
), pp.
1177
1181.
10.
Randle
,
V.
, and
Jones
,
R.
, 2009, “
Grain Boundary Plane Distributions and Single-Step Versus Multiple-Step Grain Boundary Engineering
,”
Mater. Sci. Eng. A
,
524
(
1
), pp.
134
142
.
11.
Schwartz
,
A. J.
,
Kumar
,
M.
, and
King
,
W. E.
, 2000, “
Influence of Processing Method on the Grain Boundary Character Distribution and Network Connectivity
,”
MRS Symp. Proc. on Interfacial engineering for optimized properties II
,
C. L.
Briant
,
C. B.
Carter
,
E. L.
Hall
, and
S.
Nutt
, eds.,
586
, pp.
3
14
.
12.
Kumar
,
M.
,
King
,
W. E.
, and
Schwartz
,
A. J.
, 2000, “
Modifications to The Microstructural Topology in f.c.c. Materials Through Thermomechanical Processing
,”
Acta Mater.
,
48
(
9
), pp.
2081
2091.
13.
Kumar
,
M.
,
Schwartz
,
A. J.
, and
King
,
W. E.
, 2002, “
Microstructural Evolution During Grain Boundary Engineering of Low to Medium Stacking Fault Energy fcc Materials
,”
Acta Mater.
50
(
10
), pp.
2599
2612
.
14.
Randle
,
V.
, and
Coleman
,
M.
, 2009, “
A Study of Low-Strain and Medium-Strain Grain Boundary Engineering
,”
Acta Mater.
,
57
(
11
), pp.
3410
3421.
15.
Lehockey
,
E. M.
,
Palumbo
,
G.
, and
Lin
,
P.
, 1998, “
Improving the Weldability and Service Performance of Nickel- and Iron-Based Superalloys by Grain Boundary Engineering
,”
Metall. Mater. Trans. A
,
29
(
12
), pp.
3069
3079.
16.
Lee
,
S. L.
, and
Richards
,
N. L.
, 2005, “
The Effect of Single-Step Low Strain and Annealing of Nickel on Grain Boundary Character
,”
Mater. Sci. Eng. A
,
390
(
1
), pp.
81
87.
17.
Kumar
,
B. R.
,
Das
,
S. K.
,
Mahato
,
B.
,
Das
,
A.
, and
Chowdhury
,
S. G.
, 2007, “
Effect of Large Strains on Grain Boundary Character Distribution in AISI 304L Austenitic Stainless Steel
,”
Mater. Sci. Eng. A
,
454
(
1
), pp.
239
244.
18.
Brandon
,
D. G.
, 1966, “
The Structure of High-Angle Grain Boundaries
,”
Acta Metall.
,
14
, pp.
1479
1484.
19.
Gertsman
,
V. Y.
, and
Henager
,
C. H.
, 2003, “
Grain Boundary Junctions in Microstructure Generated by Multiple Twinning
,”
Interface Sci.
,
11
(
4
), pp.
403
415.
20.
Baudin
,
T.
,
Etter
,
A. L.
, and
Penelle
,
R.
, 2007, “
Annealing Twin Formation and Recrystallization Study of Cold-Drawn Copper Wires from EBSD Measurements
,”
Mater. Charact
,
58
, pp.
947
952.
21.
Berger
,
A.
,
Wilbrandt
,
P. J.
,
Ernst
,
F.
,
Klement
,
U.
, and
Haasen
,
P.
, 1988, “
On the Generation of New Orientations During Recrystallization: Recent Results on the Recrystallization of Tensile-Deformed fcc Single Crystals
,”
Prog. Mater. Sci.
,
32
(
1
), pp.
1
95.
22.
Hirsch
,
J
, and
Lücke
,
K.
, 1988, “
Mechanism of Deformation and Development of Rolling Textures in Polycrystalline F.C.C. Metals—Description of Rolling Texture Development in Homogeneous CuZn Alloys
,”
Acta Metall.
,
36
(
11
), pp.
2863
2882.
23.
Humphreys
,
F. J.
, and
Hatherly
,
M.
, 2004,
Recrystallization and Related Annealing Phenomena
,
Elsevier
,
Amsterdam
.
24.
Wang
,
W
,
Zhou
,
B.
,
Rohrer
,
G. S.
,
Guo
,
H.
, and
Cai
,
Z.
, 2010, “
Textures and Grain Boundary Character Distributions in a Cold Rolled and Annealed Pb–Ca Based Alloy
,”
Mater. Sci. Eng. A
,
527
(
16–17
), pp.
3695
3706.
25.
Bailey
,
J. E.
, and
Hirsch
,
P. B.
, 1962, “
Recrystallization Process in Some Polycrystalline Metals
,”
Proc. R. Soc. London
,
A267
, pp.
11
30.
26.
Beck
,
P. A.
, and
Sperry
,
P. R.
, 1950, “
The Orientation Dependence of the Rate of Grain Boundary Migration
,”
J. Appl. Phys.
,
21
, pp.
420
425.
27.
Mahajan
,
S.
,
Pande
,
C. S.
,
Imam
,
M. A.
,
Rath
,
B.B.
, 1997, “
Formation of Annealing Twins in f.c.c. Crystals
,”
Acta Mater.
,
45
(
6
), pp.
2633
2638.
28.
Wang
,
W
,
Yin
,
F.
,
Guo
,
H.
,
Li
,
H.
, and
Zhou
,
B.
, 2008, “
Effects of Recovery Treatment After Large Strain on the Grain Boundary Character Distributions of Subsequently Cold Rolled and Annealed Pb–Ca–Sn–Al Alloy
,”
Mater. Sci. Eng. A
,
491
(
1–2
), pp.
199
206.
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