Effect of HPT on Age-Hardening Behavior in Cu-Added Excess Mg-Type Al-Mg-Si Alloys

Shun Maruno; Seiji Saikawa; Shoichi Hirosawa; T. Hamaoka; Z. Horita; S. Lee; Daisuke Terada; Kenji Matsuda

doi:10.4028/www.scientific.net/AMR.922.487

Paper Titles

Effect of Strain Hardening on the Joint Efficiency of an Al-Mg-Sc-Zr Alloy Subjected to Friction Stir Welding
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Morphology of Edge Cracks of Rolled Magnesium Alloy Sheet
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Effect of Composition and Thermo-Mechanical Processing on Microstructure Development in Ni-30Fe-Nb-C Model Alloys
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Magnetic Pulse Spot Welding: An Innovative Approach
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Effect of HPT on Age-Hardening Behavior in Cu-Added Excess Mg-Type Al-Mg-Si Alloys
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Solid State Bonding of Al Alloy/SUS304 by Metal Salt Generation Bonding Technique with Acetic Acid
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High Tensile Ductility in Electrodeposited Bulk Nanocrystalline Ni–W Alloys
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HRTEM Observation of Age-Precipitation in Mg-2.9at.% Alloys
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Experimental and FEM Studies of the Relationships between Equal-Channel Angular Pressing Die Design, Strain Distribution and Pressing Forces
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 922Effect of HPT on Age-Hardening Behavior in...

Effect of HPT on Age-Hardening Behavior in Cu-Added Excess Mg-Type Al-Mg-Si Alloys

Abstract:

Severe plastic deformation (SPD) techniques such as high pressure torsion (HPT) have been extensively researched to achieve. SPD process makes use of the plastic deformation where no change in the cross-sectional dimension of a work piece occurs during straining.In this work, the effect of HPT on aging behavior and microstructure in excess Mg-type Al-Mg-Si alloys including Cu. These alloys were investigated by hardness test and TEM observation. The results show that processing by HPT leads to significant grain refinement with a grain size of ~250nm. Age-hardening phenomenon is observed at 343K and 373K for the Al-Mg-Si alloys with HPT. A few density of dislocation in the crystal grain was observed. The typical needle-shaped precipitates of Al-Mg-Si alloys were not observed in the matrix.

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Periodical:

Advanced Materials Research (Volume 922)

Pages:

487-490

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.922.487

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Online since:

May 2014

Authors:

Shun Maruno*, Seiji Saikawa, Shoichi Hirosawa, T. Hamaoka, Z. Horita, S. Lee, Daisuke Terada, Kenji Matsuda

Keywords:

Age-Hardening, Al-Mg-Si Alloy, HPT, TEM

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