The influence of initial texture on rollability is investigated using cuneal AZ31 Mg alloy sheets. Upon large thickness reduction, the sheet with initial basal texture has many edge cracks, whereas the sheet is crack-free if its normal direction is orthogonal to c-axis of hexagonal close packed (HCP) lattice. Microstructural analysis shows that the former one has heterogeneous grain structure owing to grain-boundary-related recrystallization, and by contrast the later one has a more uniform microstructure for the twin-related recrystallization. The initial nonbasal texture can lead to excellent rollability and anisotropic deformation, based on which a new iterative approach of rolling is proposed, which may achieve large reduction in few passes.

References

References
1.
Jin
,
Q.
,
Shim
,
S.-Y.
, and
Lim
,
S.-G.
,
2006
, “
Correlation of Microstructural Evolution and Formation of Basal Texture in a Coarse Grained Mg-Al Alloy During Hot Rolling
,”
Scr. Mater.
,
55
, pp.
843
846
.10.1016/j.scriptamat.2006.05.040
2.
Del Valle
,
J. A.
,
Pérez-Prado
,
M. T.
, and
Ruano
,
O. A.
,
2003
, “
Texture Evolution During Large-Strain Hot Rolling of the Mg AZ61 Alloy
,”
Mater. Sci. Eng., A
,
355
, pp.
68
78
.10.1016/S0921-5093(03)00043-1
3.
Liang
,
S.
,
Sun
,
H.
,
Liu
,
Z.
, and
Wang
,
E.
,
2009
, “
Mechanical Properties and Texture Evolution During Rolling Process of an AZ31 Mg Alloy
,”
J. Alloys Compd.
,
472
, pp.
127
132
.10.1016/j.jallcom.2008.04.093
4.
Li
,
H.
,
Hsu
,
E.
,
Szpunar
,
J.
,
Utsunomiya
,
H.
, and
Sakai
T.
,
2008
, “
Deformation Mechanism and Texture and Microstructure Evolution During High-Speed Rolling of AZ31B Mg Sheets
,”
J. Mater. Sci.
,
43
, pp.
7148
7156
.10.1007/s10853-008-3021-3
5.
Rao
G. S.
, and
Prasad
Y.
,
1983
, “
Effect of Texture and Grain-Size on the Fracture-Behavior of Hot Rolled Mg, Mg-12.5-Percent-Li, and Mg-5-Percent-Tl Alloys
,”
Res. Mech.
,
9
, pp.
41
61
.
6.
Chino
,
Y.
,
Sassa
,
K.
, and
Mabuchi
,
M.
,
2008
, “
Texture and Stretch Formability of Mg-1.5 Mass% Zn-0.2 Mass% Ce Alloy Rolled at Different Rolling Temperatures
,”
Mater. Trans.
,
49
, pp.
2916
2918
.10.2320/matertrans.MEP2008257
7.
Suwas
,
S.
,
Gottstein
,
G.
, and
Kumar
,
R.
,
2007
, “
Evolution of Crystallographic Texture During Equal Channel Angular Extrusion (ECAE) and Its Effects on Secondary Processing of Magnesium
,”
Mater. Sci. Eng., A
,
471
, pp.
1
14
.10.1016/j.msea.2007.05.030
8.
Chun
,
Y.
, and
Davies
,
C.
,
2011
, “
Investigation of Prism 〈a〉 Slip in Warm-Rolled AZ31 Alloy
,”
Metall. Mater. Trans. A
,
42
, pp.
4113
4125
.10.1007/s11661-011-0800-2
9.
Wang
,
M. Y.
,
Xin
,
R. L.
,
Wang
,
B. S.
, and
Liu
,
Q.
,
2011
, “
Effect of Initial Texture on Dynamic Recrystallization of AZ31 Mg Alloy During Hot Rolling
,”
Mater. Sci. Eng., A
,
528
, pp.
2941
2951
.10.1016/j.msea.2010.11.069
10.
Lee
,
B. H.
,
Park
,
S. H.
,
Hong
,
S. G.
,
Park
,
K. T.
, and
Lee
,
C. S.
,
2011
, “
Role of Initial Texture on the Plastic Anisotropy of Mg-3Al-1Zn Alloy at Various Temperatures
,”
Mater. Sci. Eng., A
,
528
, pp.
1162
1172
.10.1016/j.msea.2010.10.065
11.
Huang
,
X.
,
Suzuki
,
K.
, and
Chino
,
Y.
,
2010
, “
Influences of Initial Texture on Microstructure and Stretch Formability of Mg-3Al-1Zn Alloy Sheet Obtained by a Combination of High Temperature and Subsequent Warm Rolling
,”
Scr. Mater.
,
63
, pp.
395
398
.10.1016/j.scriptamat.2010.04.032
12.
Prasad
,
Y. V. R. K.
, and
Rao
,
K. P.
,
2008
, “
Processing Maps for Hot Deformation of Rolled AZ31 Magnesium Alloy Plate: Anisotropy of Hot Workability
,”
Mater. Sci. Eng., A
,
487
, pp.
316
327
.10.1016/j.msea.2007.10.038
13.
Dai
,
Q.
,
Zhang
,
D.
, and
Chen
,
X.
,
2011
, “
On the Anisotropic Deformation of AZ31 Mg Alloy Under Compression
,”
Mater. Des.
,
32
, pp.
5004
5009
.10.1016/j.matdes.2011.06.017
14.
Lee
,
J. B.
,
Konno
,
T. J.
, and
Jeong
,
H. G.
,
2010
, “
Effect of Differential Speed Rolling on the Anisotropy of Mechanical Properties and Texture Evolution of AZ31 Mg Alloys
,”
J. Alloys Compd.
,
499
, pp.
273
277
.10.1016/j.jallcom.2010.03.186
15.
Chiang
,
C.-T.
,
Lee
,
S.
, and
Chu
,
C.-L.
,
2010
, “
Rolling Route for Refining Grains of Super Light Mg-Li Alloys Containing Sc and Be
,”
Trans. Nonferrous Met. Soc. China
,
20
, pp.
1374
1379
.10.1016/S1003-6326(09)60307-1
16.
Chino
,
Y.
,
Sassa
,
K.
,
Kamiya
,
A.
, and
Mabuchi
,
M.
,
2006
, “
Influence of Rolling Routes on Press Formability of a Rolled AZ31 Mg Alloy Sheet
,”
Mater. Trans.
,
47
, pp.
2555
2560
.10.2320/matertrans.47.2555
17.
Chino
,
Y.
,
Lee
,
J.-S.
,
Sassa
,
K.
,
Kamiya
,
A.
, and
Mabuchi
,
M.
,
2006
, “
Press Formability of a Rolled AZ31 Mg Alloy Sheet With Controlled Texture
,”
Mater. Lett.
,
60
, pp.
173
176
.10.1016/j.matlet.2005.08.012
18.
Beer
,
A. G.
, and
Barnett
,
M. R.
,
2006
, “
Influence of Initial Microstructure on the Hot Working Flow Stress of Mg-3Al-1Zn
,”
Mater. Sci. Eng., A
,
423
, pp.
292
299
.10.1016/j.msea.2006.02.041
19.
Beer
,
A. G.
, and
Barnett
,
M. R.
,
2007
, “
Microstructural Development During Hot Working of Mg-3Al-1Zn
,”
Metall. Mater. Trans. A
,
38A
, pp.
1856
1867
.10.1007/s11661-007-9207-5
20.
Yan
,
H.
,
Xu
,
S. W.
,
Chen
,
R. S.
,
Kamado
,
S.
,
Honma
,
T.
, and
Han
,
E. H.
,
2011
, “
Twins, Shear Bands and Recrystallization of a Mg-2.0%Zn-0.8%Gd Alloy During Rolling
,”
Scr. Mater.
,
64
, pp.
141
144
.10.1016/j.scriptamat.2010.09.029
21.
Wang
,
J.
,
Dong
,
H.
,
Wang
,
L.
,
Wu
,
Y.
, and
Wang
,
L.
,
2010
, “
Effect of Hot Rolling on the Microstructure and Mechanical Properties of Mg-5Al-0.3Mn-2Nd Alloy
,”
J. Alloys Compd.
,
507
, pp.
178
183
.10.1016/j.jallcom.2010.07.149
22.
Jin
,
Q. L.
,
2005
, “
Effects of Grain Refinement on Rollability of AZ31 Mg Alloy
,”
Mater. Sci. Forum
,
475–479
, pp.
533
536
.10.4028/www.scientific.net/MSF.475-479.533
23.
Lee
,
B. H.
,
Park
,
S. H.
,
Hong
,
S.-G.
,
Park
,
K.-T.
, and
Lee
,
C. S.
,
2011
, “
Role of Initial Texture on the Plastic Anisotropy of Mg-3Al-1Zn Alloy at Various Temperatures
,”
Mater. Sci. Eng., A
,
528
, pp.
1162
1172
.10.1016/j.msea.2010.10.065
24.
Song
,
G.-S.
,
Zhang
,
S.-H.
,
Zheng
,
L.
, and
Ruan
,
L.
,
2011
, “
Twinning, Grain Orientation and Texture Variation of AZ31 Mg Alloy During Compression by EBSD Tracing
,”
J. Alloys Compd.
,
509
, pp.
6481
6488
.10.1016/j.jallcom.2011.03.106
25.
Choi
,
S. H.
,
Shin
,
E. J.
, and
Seong
,
B. S.
,
2007
, “
Simulation of Deformation Twins and Deformation Texture in an AZ31 Mg Alloy Under Uniaxial Compression
,”
Acta Mater.
,
55
, pp.
4181
4192
.10.1016/j.actamat.2007.03.015
26.
Xin
,
Y.
,
Wang
,
M.
,
Zeng
,
Z.
,
Huang
,
G.
, and
Liu
,
Q.
,
2011
, “
Tailoring the Texture of Magnesium Alloy by Twinning Deformation to Improve the Rolling Capability
,”
Scr. Mater.
,
64
, pp.
986
989
.10.1016/j.scriptamat.2011.02.010
You do not currently have access to this content.