Internal Friction in Plastically Deformed High-Purity NiAl Single Crystals
作者： M. Hirscher , D. Schaible
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摘要: High-purity stoichiometric NiAl single crystals have been prepared by crucible-free inductive zone melting and afterwards well annealed at temperatures below 1200 K. Internal friction measurements of torsionally deformed show two relaxation maxima 500 800 K which anneal during the measurement. The first maximum can be assigned to dislocation motion kinkpair formation annealing pinning these dislocations interstitial impurity atoms. second is attributed Snoek-Koster in presence mobile atoms vacancies. kink-pair enthalpy was estimated.
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F.R. Brotzen, A. Seeger, Diffusion near dislocations, dislocation arrays and tensile cracks Acta Metallurgica. ,vol. 37, pp. 2985- 2992 ,(1989) , 10.1016/0001-6160(89)90334-9
C. L. Fu, Y.-Y. Ye, M. H. Yoo, Bulk and Defect Properties of Ordered Intermetallics: A First-Principles Total-Energy Investigation MRS Proceedings. ,vol. 288, pp. 21- ,(1992) , 10.1557/PROC-288-21
U. Essmann, R. Henes, U. Holzwarth, F. Klopfer, E. Büchler, Containerless Growth and Annealing Behaviour of NiAl Single Crystals Physica Status Solidi (a). ,vol. 160, pp. 487- 497 ,(1997) , 10.1002/1521-396X(199704)160:2<487::AID-PSSA487>3.0.CO;2-4
A. Parthasarathi, H. L. Fraser, The annealing of vacancy defects in β-NiAl I. Vacancy loop growth in as-grown single crystals annealed in ultra-high vacuum Philosophical Magazine. ,vol. 50, pp. 89- 100 ,(1984) , 10.1080/01418618408244214
T'ing-Sui Kê, Experimental Evidence of the Viscous Behavior of Grain Boundaries in Metals Physical Review. ,vol. 71, pp. 533- 546 ,(1947) , 10.1103/PHYSREV.71.533
M.L. Weaver, R.D. Noebe, M.J. Kaufman, Observations of dynamic strain aging in polycrystalline NiAl Intermetallics. ,vol. 4, pp. 593- 600 ,(1996) , 10.1016/0966-9795(96)00045-3
M. Bacal, A.M. Bruneteau, M. Nachman, Electron collection radius of an electrostatic probe immersed in a low-pressure plasma Journal de Physique Lettres. ,vol. 42, pp. 5- 7 ,(1981) , 10.1051/JPHYSLET:019810042010500
A. Granato, K. Lücke, Theory of Mechanical Damping Due to Dislocations Journal of Applied Physics. ,vol. 27, pp. 583- 593 ,(1956) , 10.1063/1.1722436
D.B. Miracle, Overview No. 104 The physical and mechanical properties of NiAl Acta Metallurgica Et Materialia. ,vol. 41, pp. 649- 684 ,(1993) , 10.1016/0956-7151(93)90001-9
D. Schaible, M. Hirscher, H. Kronmuller, Residual resistivity ratio and plasticity of high-purity NiAl single crystals Philosophical Magazine Letters. ,vol. 78, pp. 121- 125 ,(1998) , 10.1080/095008398178101