An internal variable approach to high temperature deformation and superplasticity of Mg alloys

Journal of Materials Processing Technology

Volumn 187-188, Issue , 2007, Pages 550-554

  Lee, H S ^a   Park, J S ^a   Chang, Y W ^a  

^a Pohang University of Science and Technology (POSTECH)   (South Korea)

Author keywords

High temperature deformation; Internal variable theory; Magnesium; Superplasticity

Indexed keywords

GRAIN BOUNDARIES; GRAIN SIZE AND SHAPE; MATERIALS TESTING; PLASTIC DEFORMATION; POLYCRYSTALS; SUPERPLASTICITY;

CONSTITUTIVE ANALYSIS; GRAIN SIZE REFINEMENT; HIGH TEMPERATURE DEFORMATION; INTERNAL VARIABLE THEORY;

MAGNESIUM ALLOYS;

EID: 33947220353     PISSN: 09240136     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.jmatprotec.2006.11.138     Document Type: Article

References (19)

1. Juchmann P., and Wolff S. Magnesium sheet components for ultralight construction. Proceedings of the 56th Annual World Magnesium Conference. May 19-21 (2002) 49-54
2. Chung Y.H., Park J.W., and Lee K.H. An analysis of accumulated deformation in the equal channel angular rolling (ECAR) process. Met. Mater. Int. 12 (2006) 289-293
3. Lin L., Liu Z., Chen L., Liu T., and Wu S. Tensile properties and strengthening mechanisms of Mg-Zn-Zr alloys. Met. Mater. Int. 10 (2004) 507-513
4. Wang Y.N., and Huang J.C. Transition of dominant diffusion process during superplastic deformation in AZ61 magnesium alloys. Metall. Mater. Trans. A 35 (2004) 555-562
5. Watanabe H., Mukai T., Kohzu M., Tanabe S., and Higashi K. Effect of temperature and grain size on the dominant diffusion process for superplastic flow in an AZ61 magnesium alloy. Acta. Mater. 47 (1999) 3753-3758
6. Mabuchi M., Ameyama K., Iwasaki H., and Higashi K. Low temperature superplasticity of AZ91 magnesium alloy with non-equilibrium grain boundaries. Acta. Mater. 47 (1999) 2047-2057
7. Padmanabhan K.A., and Davis G.J. Superplasticity (1980), Springer-Verlag, Berlin, Germany
8. Sherby O.D., and Wadsworth J. Superplasticity-recent advances and future directions. J. Prog. Mater. Sci. 33 (1989) 169-221
9. Rai G., and Grant N.J. Measurements of superplasticity in an Al-Cu alloy. Metall. Trans. A 6 (1975) 385-390
10. Cook R.C., and Risebrough N.R. Superplasticity in a dilute zinc-aluminum alloy. Scripta Metall. 2 (1968) 487-489
11. Ha T.K., and Chang Y.W. An internal variable theory of structural superplasticity. Acta Metall. 46 (1998) 2741-2749
12. Kim J.H., Semiatin S.L., and Lee C.S. Constitutive analysis of the high-temperature deformation of Ti-6Al-4V with a transformed microstructure. Acta Mater. 51 (2003) 5613-5626
13. Ha T.K., Sung H.J., Kim K.S., and Chang Y.W. An internal variable approach to the grain size effect on the superplastic deformation behavior of a 7475 Al alloy. Mater. Sci. Eng. A 271 (1999) 160-166
14. Ha T.K., and Chang Y.W. An internal variable approach to grain size effect on superplasticity of a Pb-Sn eutectic alloy. Scripta Mater. 41 (1999) 103-108
15. Ha T.K., Koo H.W., and Chang Y.W. Temperature and grain size dependence of superplasticity in a Zn-0.3 wt.% Al alloy. Met. Mater. Int. 9 (2003) 29-33
16. Kwon Y.N., and Chang Y.W. Effects of microstructural evolution on superplastic deformation characteristics of a rapidly solidified Al-Li alloy. Metall. Mater. Trans. A30 (1999) 2037-2047
17. Lee D., and Hart E.W. Stress relaxation and mechanical behavior of metals. Metall. Trans. 2A (1971) 1245-1248
18. Tegart W.J.McG. Activation energies for high temperature creep of polycrystalline magnesium. Acta. Metall. 9 (1961) 614-617
19. Vagarali S.S., and Langdon T.G. Deformation mechanisms in H.C.P. Metals at elevated temperatures. Part II. Creep behavior of a Mg-0.8% Al solid solution alloy. Acta Mater. 30 (1982) 1157-1170