Grain Refinement in Magnesium Alloy AZ31 during Multidirectional Forging under Decreasing Temperature Conditions

Jie Xing; Xu Yue Yang; Hiromi Miura; Taku Sakai

doi:10.4028/www.scientific.net/MSF.488-489.597

Paper Titles

An Investigation of Low Temperature Superplasticity of ZK40 Magnesium Alloy Subjected to Equal Channel Angular Pressing
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Effect of Temperature on the Superplasticity of AZ81 Magnesium Alloy Processed by Hot Extrusion
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Effect of Equal Channel Angular Extrusion on the Microstructure and Mechanical Properties of Magnesium Alloy Containing Quasicrystallines
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Effect of Microstructures and Texture Development on Tensile Properties of Wrought Magnesium Alloys Processed by ECAE
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Grain Refinement in Magnesium Alloy AZ31 during Multidirectional Forging under Decreasing Temperature Conditions
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Microstructure Evolution and Mechanical Properties of AZ 31 Mg Alloy Processed by Equal Channel Angular Extrusion
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Development of Semi-Solid Processes for Hot Extrusion of Magnesium Alloys
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The Influence of Twinning on the Hot Working Flow Stress and Microstructural Evolution of Magnesium Alloy AZ31
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New Processing Technology of Twin Roll Strip Casting of AZ31B Magnesium Strip
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HomeMaterials Science ForumMaterials Science Forum Vols. 488-489Grain Refinement in Magnesium Alloy AZ31 during...

Grain Refinement in Magnesium Alloy AZ31 during Multidirectional Forging under Decreasing Temperature Conditions

Abstract:

Grain refinement in a magnesium alloy AZ31 was studied in multi-directional forging (MDF) at a strain rate of 3×10-3s-1 with decreasing temperature from 623K to 423K. The MDF was carried out up to large cumulative strains with changing the loading direction during decreasing temperature from pass to pass. The structural changes were characterized by generation of many mutually crossing kink bands at low strains, followed by development of very fine grains at large strains. The results showed that MDF with decreasing temperature can accelerate uniform generation of much finer grains, resulting in the minimal grain size of 0.36µm in a cumulative strain of 4.8 at 423K. The mechanism of grain refinement was discussed.

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Periodical:

Materials Science Forum (Volumes 488-489)

Pages:

597-600

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.488-489.597

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Online since:

July 2005

Authors:

Jie Xing, Xu Yue Yang, Hiromi Miura, Taku Sakai

Keywords:

AZ31 Alloy, Continuous Dynamic Recrystallization, Multidirectional Forging, Ultrafine Grained

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References

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