Superplastic Deformation Behavior in Dual-Phase Mg-Ca Alloy

Takahiko Yano; Naoko Ikeo; Hiroyuki Watanabe; Toshiji Mukai

doi:10.4028/www.scientific.net/MSF.838-839.256

Paper Titles

Energy Absorption of Superplastic Zn-22Al Alloy Foam Manufactured through Melt Foaming Process
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Influence of Second-Phase Particles on the Hot Ductility of Al–Mg Solid-Solution Alloys
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Superplastic Deformation Behavior in Dual-Phase Mg-Ca Alloy
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Elimination of Shrinkage Cavities by Liquid Hot Isostatic Pressing in Aluminum Alloys under Superplastic Conditions
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Deformation Characteristics of 6066 and 6069 Aluminum Alloys at Elevated Temperatures
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HomeMaterials Science ForumMaterials Science Forum Vols. 838-839Superplastic Deformation Behavior in Dual-Phase...

Superplastic Deformation Behavior in Dual-Phase Mg-Ca Alloy

Abstract:

Superplastic deformation behavior was investigated for a dual-phase Mg-Ca alloy. The elongation-to-failure reached more than 120% with the strain rate sensitivity, m, over 0.4. The activation energy required for the deformation was estimated to be 98 kJ/mol which is close to the activation energy for grain boundary diffusion in magnesium. Therefore, the superplastic deformation mechanism was suggested to be the grain boundary sliding rate, which is controlled by boundary diffusion.

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Periodical:

Materials Science Forum (Volumes 838-839)

Pages:

256-260

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.838-839.256

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Online since:

January 2016

Authors:

Takahiko Yano, Naoko Ikeo, Hiroyuki Watanabe, Toshiji Mukai*

Keywords:

Diffusional Flow, Dual-Phase Mg Alloy, Extrusion, Grain Boundary Sliding, Upset Forging

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* - Corresponding Author

References

[1] S. Akiyama, H. Ueno, M. Sakamoto, H. Hirai, A. Kitahara, Development of Noncombustible Magnesium Alloys, Materia Japan 39 (2000) 72-74.

DOI: 10.2320/materia.39.72

Google Scholar

[2] M. Mabuchi, T. Asahina, H. Iwasaki, K. Higashi, Experimental investigation of superplastic behavior in magnesium alloys, Mater. Sci. Tech. 13 (1997) 825-831.

DOI: 10.1179/mst.1997.13.10.825

Google Scholar

[3] D. Lee, The Nature of Superplastic Deformation in the Mg-Al Eutectic, Acta Metall. 17 (1969) 1057-1069.

DOI: 10.1016/0001-6160(69)90051-0

Google Scholar

[4] H.J. Frost, M.F. Ashby, Deformation mechanism maps, Pergamon press, Oxford, 1996, p.44.

Google Scholar

[5] O.D. Sherby, J. Wadsworth, Superplasticity-Recent advances and future directions, Prog. Mater. Sci. 33 (1989) 169-221.

DOI: 10.1016/0079-6425(89)90004-2

Google Scholar

[6] O.A. Ruano, O.D. Sherby, Low Stress Creep of Fine-Grained Materials at Intermediate Temperatures: Diffusional Creep of Grain Boundary Sliding?, Mater. Sci. Eng. 56 (1982) 167-175.

DOI: 10.1016/0025-5416(82)90169-0

Google Scholar

[7] H. Watanabe, T. Mukai, M. Kohzu, S. Tanabe, K. Higashi, 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.

DOI: 10.1016/s1359-6454(99)00253-0

Google Scholar