On activation energy during initial stage of superplastic deformation (Englisch)

in Scripta Materialia ; 39 , 1 ; 95-102
Scripta Materialia
; 1998
  • Neue Suche nach:

The current paper adresses the issue of extracting activation energy from flow stress data under fixed strain rate and strain levels. If the microstructures in the superplastic materials after thermomechanical treatments need to evolve gradually during the initial stage of superplastic straining, the structure evolution rate might be different at different test temperatures. A higher activation energy would result in if one uses the flow stress data at epsilon < 0.5, where the structure has not yet reached its stable condition. The calculated activation energy might not reflect the true deformation mechanisms.

Dokumentinformationen


Inhaltsverzeichnis – Band 39, Ausgabe 1

Zeige alle Jahrgänge und Ausgaben

Die Inhaltsverzeichnisse werden automatisch erzeugt und basieren auf den im Index des TIB-Portals verfügbaren Nachweisen der enthaltenen Aufsätze. Die Anzeige der Jahrgänge kann aufgrund fehlender Aufsatznachweise unvollständig oder lückenhaft sein, obwohl die Zeitschrift komplett in der TIB verfügbar ist.

1
Activities of Al in the Al-Ga-In-Sb System in the Temperature Range of 1073-1273K
Jayaganthan, R. / Hajra, J.P. | 1998
7
Observation of Lamellar Eutectic-Like Structure in a Zn-Rich Zn-3.37 wt& Cu Peritectic Alloy Processed by Bridgman Solidification
Li, Y. / Ng, S.C. / Ma, D. / Jones, H. | 1998
13
Local Values of the Diffusivities at the Migration Front of the Discontinuous Precipitates in Al-22 at.% Zn Alloy
Zieba, P. / Gust, W. | 1998
21
High Temperature Mechanical Properties of a Multilayer Y-TZP Processed by Superplastic Flow
Dominguez-Rodriguez, A. / Jiménez-Piqué, E. / Jiménez-Melendo, M. | 1998
27
The Effect of Fabrication Mode on Microstructure. Texture and Strength in Cu-Nb-Ti Composite
Brandao, L. / Kalu, Pn | 1998
35
Carbon Content of Austenite in Austempered Ductile Iron
Chang, L.C. | 1998
39
The Influence of Aging on Damping Capacity of Fe-17& Mn-X% C Alloys
Jun, J.-H. / Bail, S.-H. / Lee, Y.-K. / Choi, C.-S. | 1998
45
An Investigation of the Properties of Mg-Zn-Al Alloys
Zhang, Z. / Couture, A. / Luo, A. | 1998
55
Universal pinch off of rods by capillarity-driven surface diffusion
Wong, H. / Miksis, M.J. / Voorhees, P.W. / Davis, S.H. | 1998
55
Universal Pinch Off of Rods bye Capillarity-Driven Surface Diffusion
Wong, H. / Miksis, M.J. / Voorhees, P.W. / Davis, S.H. | 1998
61
Mössbauer Study of the Ferrite Decomposition in Unaged Duplex Stainless Steels
Lemoine, C. / Fnidiki, A. / Teillet, J. / Hédin, M. / Danoix, F. | 1998
61
Moessbauer Study of the Ferrite Decomposition in Unaged Duplex Stainless Steels
Lemoine, C. / Fnidiki, A. / Teillet, J. / Hedin, M. / Danoix, F. | 1998
67
Liquid Phase Sintering of M3-2 High Speed Steel by Selective Laser Sintering
Niu, H.J. / Chang, I.T.H. | 1998
73
Phase Separation by Internal Oxidation and Reduction in a Cu-5at%Ni-Alloy
Lüke, R. / Bankmann, J. / Wilbrandt, P.-J. / Erfurth, W. / Kirchheim, R. | 1998
79
Interreaction of Cu-Au Thin Films Observed by High Angle Hollow Cone Darkfield Electron Microscopy
Hartung, F. / Ewert, J.C. / Dzick, J. / Schmitz, G. | 1998
87
High temperature thermal analysis of Ni-Al alloys around the gamma' composition
Battezzati, L. / Baricco, M. / Pascale, L. | 1998
87
High Temperature Thermal Analysis of Ni-Al Alloys Around the g' Composition
Battezzati, L. / Baricco, M. / Pascale, L. | 1998
95
On Activation Energy During Initial Stage of Superplastic Deformation
Huang, J.C. / Fu, H.C. / Lou, B.Y. / Lee, H.I. | 1998
103
Effect of Reduction Temperature on Internal Reduction Microstructures
Rogers, K.A. / Trumble, K.P. | 1998
109
On the Reaction Mechanism of all Al-TiO2-B System for Producing In-Situ (Al2O3+TiB2)-Al Composites
Feng, C.F. / Froyen, L. | 1998
109
On the reaction mechanism of an Al-TiO2-B system for producing in-situ (Al2O3+TiB2)/Al composites
Feng, C.F. / Froyen, L. | 1998
119
Effect of prestraining on cavity morphology in a superplastic 3 Mol-% yttria-stabilized tetragonal zirconia (3Y-TZP)
Tekeli, S. / Davies, T.J. | 1998
119
Effect of Prestraining on Cavity Morphology in a Superplastic 3 Mol% Yttria-Stabilized Tetragoonal Zirconia (3Y-TZP)
Tekeli, S. / Davies, T.J. | 1998
125
Steady-State Grain Growth in UO2
Galinari, C.M. / Lameiras, F.S. | 1998

Ähnliche Titel