Shear localization is demonstrated in bulk tungsten (W) of commercial purity under dynamic uniaxial compression. Microstructure refinement via severe plastic deformation was the strategy used to induce this unusual deformation mode for W. The ultrafine microstructure achieved in bcc materials leads to elevated strength and ductility, as well as reduced strain hardening and strain rate hardening, thus enhancing the propensity for adiabatic plastic flow localization.
REFERENCES
1.
T. W.
Wright
, The Physics and Mathematics of Adiabatic Shear Bands
(Cambridge University Press
, Cambridge, 2002
).2.
L. S.
Magness
, D.
Kapoor
, and R.
Dowding
, Mater. Manuf. Processes
10
, 531
(1995
).3.
A.
Bleise
, P. R.
Danesi
, and W.
Burkart
, J. Environ. Radioact.
64
, 93
(2003
).4.
W. D.
Cai
, Y.
Li
, R.
Dowding
, F. A.
Mohamed
, and E. J.
Lavernia
, Rev. Particulate Mater.
3
, 71
(1995
).5.
J. J.
Jonas
, R. A.
Holt
, and C. E.
Coleman
, Acta Metall.
24
, 911
(1976
).6.
7.
D.
Jia
, Y. M.
Wang
, K. T.
Ramesh
, E.
Ma
, Y. T.
Zhu
, and R. Z.
Valiev
, Appl. Phys. Lett.
79
, 611
(2001
).8.
R. Z.
Valiev
, R. K.
Islamgaliev
, and I. V.
Alexandrov
, Prog. Mater. Sci.
45
, 103
(2000
).9.
10.
E.
Lassner
and W.-D.
Schubert
, Tungsten-Properties, Chemistry, Technology of the Element, Alloys and Chemical Compounds
(Kluwer-Academic∕Plenum
, 1998
).11.
12.
13.
Q.
Wei
, T.
Jiao
, S. N.
Mathaudhu
, E.
Ma
, K. T.
Hartwig
and K. T.
Ramesh
, Mater. Sci. Eng., A
358
, 266
(2003
).14.
15.
J.
Marian
, W.
Cai
, and V. V.
Bulatov
, Nat. Mater.
3
, 158
(2004
).16.
H.
Conrad
, in High-Strength Materials
, edited by V. F.
Zackay
(Wiley
, New York, 1965
), p. 436
.17.
D.
Caillard
and J. L.
Martin
, Thermally Activated Mechanisms in Crystal Plasticity
(Pergamon
, Amsterdam, 2003
), Chap. 2, p. 13
.18.
19.
Q.
Wei
, S.
Chen
, K. T.
Ramesh
, and E.
Ma
, Mater. Sci. Eng., A
381
, 71
(2004
).20.
(a)
D.
Jia
, K. T.
Ramesh
, and E.
Ma
, Acta Mater.
51
, 3495
(2003
);(b)
Q.
Wei
Q, L.
Kecskes
, T.
Jiao
, K. T.
Hartwig
, E.
Ma
, and K. T.
Ramesh
, Acta Mater.
52
, 1859
(2004
);(c)
Q.
Wei
, Y.
Jiao
, K. T.
Ramesh
, and E.
Ma
, Scr. Mater.
51
, 367
(2004
).21.
22.
P.
Gumbsch
, J.
Riedle
, A.
Hartmaier
, and H. F.
Fischmeister
, Science
282
, 1293
(1998
).23.
T.
Dummer
, J. C.
Lasalvia
, G.
Ravichandran
, and M. A.
Meyers
, Acta Mater.
46
, 6267
(1998
).24.
J. R.
Li
, J. L.
Yu
, and Z. G.
Wei
, Int. J. Impact Eng.
28
, 303
(2003
). 25.
Q.
Wei
, D.
Jia
, E.
Ma
, and K. T.
Ramesh
, Appl. Phys. Lett.
81
, 1240
(2002
).© 2005 American Institute of Physics.
2005
American Institute of Physics
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