Microstructural evolution and superplasticity of rolled Mg-9Al-1Zn

T. Mohri; M. Mabuchi; M. Nakamura; T. Asahina; H. Iwasaki; T. Aizawa; K. Higashi

doi:10.1016/S0921-5093(00)00959-X

Microstructural evolution and superplasticity of rolled Mg-9Al-1Zn

T. Mohri, M. Mabuchi, M. Nakamura, T. Asahina, H. Iwasaki, T. Aizawa, K. Higashi

Materials Science and Engineering

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184 Citations (Scopus)

Abstract

Microstructural evolution and superplasticity of a Mg-9Al-1Zn alloy rolled at 673 K were investigated at 573 K and 1.5 × 10^-3 s^-1. The grain size of the as-rolled Mg alloy was 39.5 μm. However, the grain size of the specimen deformed to a true strain of 0.6 was 9.1 μm. The grain refinement was attributed to dynamically continuous recrystallization during an initial stage of tensile test. Stabilization of subgrain boundaries by fine particles and stimulation of continuous recrystallization by prior warm-deformation were not needed to attain dynamically continuous recrystallization in the Mg alloy. As a result of the grain refinement, the rolled Mg alloy exhibited superplastic behavior.

Original language	English
Pages (from-to)	139-144
Number of pages	6
Journal	Materials Science and Engineering A
Volume	290
Issue number	1
DOIs	https://doi.org/10.1016/S0921-5093(00)00959-X
Publication status	Published - 2000 Jan 1

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ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Cite this

Mohri, T., Mabuchi, M., Nakamura, M., Asahina, T., Iwasaki, H., Aizawa, T., & Higashi, K. (2000). Microstructural evolution and superplasticity of rolled Mg-9Al-1Zn. Materials Science and Engineering A, 290(1), 139-144. https://doi.org/10.1016/S0921-5093(00)00959-X

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AU - Mohri, T.

AU - Mabuchi, M.

AU - Nakamura, M.

AU - Asahina, T.

AU - Iwasaki, H.

AU - Aizawa, T.

AU - Higashi, K.

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N2 - Microstructural evolution and superplasticity of a Mg-9Al-1Zn alloy rolled at 673 K were investigated at 573 K and 1.5 × 10-3 s-1. The grain size of the as-rolled Mg alloy was 39.5 μm. However, the grain size of the specimen deformed to a true strain of 0.6 was 9.1 μm. The grain refinement was attributed to dynamically continuous recrystallization during an initial stage of tensile test. Stabilization of subgrain boundaries by fine particles and stimulation of continuous recrystallization by prior warm-deformation were not needed to attain dynamically continuous recrystallization in the Mg alloy. As a result of the grain refinement, the rolled Mg alloy exhibited superplastic behavior.

AB - Microstructural evolution and superplasticity of a Mg-9Al-1Zn alloy rolled at 673 K were investigated at 573 K and 1.5 × 10-3 s-1. The grain size of the as-rolled Mg alloy was 39.5 μm. However, the grain size of the specimen deformed to a true strain of 0.6 was 9.1 μm. The grain refinement was attributed to dynamically continuous recrystallization during an initial stage of tensile test. Stabilization of subgrain boundaries by fine particles and stimulation of continuous recrystallization by prior warm-deformation were not needed to attain dynamically continuous recrystallization in the Mg alloy. As a result of the grain refinement, the rolled Mg alloy exhibited superplastic behavior.

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10.1016/S0921-5093(00)00959-X