Grain Refinement of Mg-Al-Zn Alloy Bar during Hot Compression

Akira Watazu; Masataka Hakamada; Hajime Iwasaki; Ichinori Shigematsu; Naobumi Saito

doi:10.4028/www.scientific.net/MSF.706-709.1267

Paper Titles

Microstructure of the High-Strength Magnesium Alloy on Cylinder Upsetting
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Creep Behavior and Microstructures in Grain Boundary Strengthened Mg-Al-Ca Thixomolded^® Alloys
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Evolution of Texture and Microstructure of AZ31 Mg Alloy Sheet at High Strain Rates
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Microstructure and Mechanical Properties of Magnesium Alloy Prepared by Repetitive Upsetting
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Grain Refinement of Mg-Al-Zn Alloy Bar during Hot Compression
p.1267

Process-Structure-Property Relationships for Magnesium Alloys
p.1273

Effect of Process Variables on Microstructural Features during Solidification of AM60B Magnesium Alloy
p.1279

Evolution of Precipitated Phases during Ageing in High Alloyed Mg-Al Based Alloys
p.1285

Microstructural Evolution during Recrystallization of Magnesiun Alloys
p.1291

HomeMaterials Science ForumMaterials Science Forum Vols. 706-709Grain Refinement of Mg-Al-Zn Alloy Bar during Hot...

Grain Refinement of Mg-Al-Zn Alloy Bar during Hot Compression

Abstract:

Grain refinements during hot compression of continuous casting AZ80 alloy bars and extrusive AZ61, AZ80 alloy bars were observed. The hot compression true stress-true strain curves of extrusive AZ61 and AZ80 alloy had similar tendencies, which were that the true stress increased and had a peak around 0.2 true strain, and then the stress decreased and was almost even from about 0.4 true strain. The stress peaks shifted to the high strain side as the compression speed, true strain speed, increased. However, the stress peaks did not shift at different compression temperatures. Fine grains were obtained under the condition of high strain speed and low temperature, but the grain sizes were uneven at low temperature compression. The stress peaks in the hot compression true stress-true strain curves of continuous casting AZ80 did not shift at different compression temperatures. AZ80 forging products with fine grains are expected to be formed under various conditions by using continuous casting AZ80.

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Periodical:

Materials Science Forum (Volumes 706-709)

Pages:

1267-1272

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.706-709.1267

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Online since:

January 2012

Authors:

Akira Watazu, Masataka Hakamada, Hajime Iwasaki, Ichinori Shigematsu, Naobumi Saito

Keywords:

AZ61, AZ80, Continuous Casting, Extrusive Bar, Grain Refinement, Hot Compression, Magnesium Alloy

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