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On the mechanism of cross slip in Ni \u3c inf\u3e 3 AI
Authors
B.H. Kear
C. Lall
+26 more
D.P. Pope
F.E. Heredia
J. Douin
M. Yamaguchi
M.H. Yoo
M.H. Yoo
N.R. Bonda
P. Veyssière
P. Veyssière
P. Veyssière
P. Veyssière
P.A. Flinn
R.V. Miner
S. Takeuchi
S.S. Ezz
Stephen D. Antolovich
T.P. Gabb
T.P. Gabb
V. Paidar
V. Paidar
V. Vitek
W.W. Milligan
W.W. Milligan
Walter W. Milligan
Y. Umakoshi
Y.Q. Sun
Publication date
1 December 1989
Publisher
'Springer Science and Business Media LLC'
Doi
Cite
Abstract
The mechanical properties of Ll2 intermetallic alloys have been previously described by models based on the assumption that cube cross slip is the rate-limiting step. In this study, it was demonstrated that the cube cross-slip event must be reversible under a change in loading direction. This observation allows the cross-slip models to remain consistent with cyclic deformation data. Additionally, this observation was used as a critical test of the available cross-slip models. It was demonstrated that the rate-limiting step cannot be a total cross-slip event, in which both α/2(110) superpartial dislocations cross slip to the cube plane. Conversely, the limited cross-slip event proposed by Paidar, Pope, and Vitek (PPV) was demonstrated to be consistent with the reversibility constraint. This lends additional experimental support to the PPV model. © 1989 The Metallurgical Society of AIME
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