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Płynięcie stopu magnezu ZK60A podczas wysokotemperaturowego odkształcenia w trakcie wytłaczania
Języki publikacji
Abstrakty
Flow behavior of a ZK60A magnesium alloy after continuous casting and subsequent extrusion was examined in tension at a range of strain rates of 3.0×10-6 − 1.0×10-2 s-1 at temperatures of 473-623K. The results demonstrated that the alloy exhibited a maximum elongation of ~250% at 523K when tested at an initial strain rate of 1.0×10-5 s-1 and strain rate sensitivity, m, of ~0.3-0.4 and the activation energy of ~94 kJ/mol were calculated under the testing conditions. The detailed investigation suggested that the high temperature flow of the ZK60A alloy having submicrometer grains demonstrates quasi-superplastic flow behavior controlled by a dislocation viscous glide process.
Wydawca
Czasopismo
Rocznik
Tom
Strony
1327--1330
Opis fizyczny
Bibliogr. 13 poz., rys.
Twórcy
autor
- Division of Materials Science and Engineering, Hanyang University, Seoul, Korea
autor
- Division of Materials Science and Engineering, Hanyang University, Seoul, Korea
autor
- Department of Energy Systems Research, Ajou University, Suwon, Korea
autor
- Department of Energy Systems Research, Ajou University, Suwon, Korea
Bibliografia
- [1] K. Kubota, M. Mabuchi, K. Higashi, Journal of Materials Science 34, 2255-2262 (1999).
- [2] A. A. Lou, JOM 54, 42-48 (2002).
- [3] J. G. Kim, H. S. Choi, T. S. Kim, Journal of Korean Powder Metallurgy Institute 16, 438-441 (2009).
- [4] J. K. Lee, T. S. Kim, J. C. Bae, Journal of Korean Powder Metallurgy Institute 14, 140-144 (2007).
- [5] T. G. Langdon, Journal of Materials Science 44, 5998-6010 (2009).
- [6] T. G. Langdon, Metallurgical and Materials Transactions A 13, 689-701 (1982).
- [7] D. A. Woodford, Transactions of the American Society of Metals 62, 291-293 (1969).
- [8] T. G. Langdon, Scripta Metallurgica 11, 997-1000 (1977).
- [9] H. J. Frost, M. F. Ashby, Deformation-Mechanism maps, Pergamon Press, UK (1982).
- [10] O. D. Sherby, P. M. Burke, Progress in Materials Science 13, 323-390 (1968).
- [11] J. E. Bird, A. K. Mukherjee, J. E. Dorn, D. G. Brandon, A. Rosen, Correlations between high-temperature creep behavior and structure, Quantitative relation between properties and microstructure, Israel Universities Press, Jerusalem (1969).
- [12] W. R. Cannon, O. D. Sherby, Metallurgical Transactions 1, 1030-1032 (1970).
- [13] P. Yavari, T. G. Langdon, Acta Metallurgica 30, 2181-2196 (1982).
Uwagi
PL
Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-9ab3de9b-04ca-40bb-b508-a3f485f4a360