Grain Refinement and Strengthening of a Cylindrical Pure-Aluminum Specimen by Using Modified Equal-Channel Angular Pressing Technique

Takuya Yamane; Ryouji Kondou; Chobin Makabe

doi:10.4028/www.scientific.net/KEM.340-341.937

Paper Titles

Processing Conditions and Mechanical Properties of Fine Grained Mg by Equal Channel Angular Pressing
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Comparison of Age-Hardening Characteristic in Thixo-Cast and Rheo-Cast T5-A356 Alloys by Nanoindenter and AFM
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Experimental Study on Mechanical Energy Hysteresis in Nano Colloidal Damper Using Porous Silica Particle
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Thermal Imprint Process of Parylene for MEMS Applications
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Grain Refinement and Strengthening of a Cylindrical Pure-Aluminum Specimen by Using Modified Equal-Channel Angular Pressing Technique
p.937

Fatigue Damage Mechanism of Nanocrystals in ECAP-Processed Copper Investigated by EBSD and AFM Hybrid Methods
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Molecular Dynamics Simulation on Crack Initiation at Bi-Material Interface Edges
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A New Method for Stress and Deformation Analysis from Nano to Macro Dimensional Scales
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Study on Nanolithography Process of Polycrystalline Copper Using Molecular Dynamic Simulation
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HomeKey Engineering MaterialsKey Engineering Materials Vols. 340-341Grain Refinement and Strengthening of a...

Grain Refinement and Strengthening of a Cylindrical Pure-Aluminum Specimen by Using Modified Equal-Channel Angular Pressing Technique

Abstract:

A new grain refinement and strengthening technique by modified ECAP (equal-channel angular pressing) technique was proposed in this study. ECAP technique is an effective technique for grain refinement and strengthening of metal material. This technique gives high shear plastic strain to the material without geometric transformation of the specimen. However, traditional ECAP technique is restricted by material type and size, especially length. Such kinds of restrictions cause various problems in practical use. We modified traditional ECAP dies and processes to allow high plastic strain for long-length pure-aluminum specimens. Then, grain distribution was observed using a microscope, grain size was determined by the Jeffries and the Heyn methods, and strengthening was investigated by micro-Vickers hardness test. Then the effectiveness of proposed grain refinement or strengthening techniques was discussed.

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Periodical:

Key Engineering Materials (Volumes 340-341)

Pages:

937-942

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.340-341.937

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Online since:

June 2007

Authors:

Takuya Yamane, Ryouji Kondou, Chobin Makabe

Keywords:

Equal-Channel Angular Pressing (ECAP), Grain Refinement, Strain-Hardening, Strengthening

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References

[1] V. M. Segal, Materials processing by simple shear, Mater. Sci. Eng., A197, (1995), 157-164.

Google Scholar

[2] R. Z. Valiev, Structure and mechanical properties of ultra fine-grained metals, Mater. Sci. Eng., A234-236, (1997), 59-66.

Google Scholar

[3] Y. Iwahashi, J. Wang, Z. Horita, M. Nemoto and T. G. Langdon, Principle of equal-channel angular pressing for the processing of ultra-fine grained materials, Scripta Mater., 35 - 2, (1996), 143-146.

DOI: 10.1016/1359-6462(96)00107-8

Google Scholar

[4] K. Nakashima, Z. Horita, M. Nemoto and T. G. Langdon, Influence of channel angle on the development of ultrafine grains in equal-channel angular pressing, Acta. Mater., 46 - 5, (1998), 1589-1599.

DOI: 10.1016/s1359-6454(97)00355-8

Google Scholar

[5] Y. Wu and I. Baker, An experimental study of equal channel angular extrusion, Scripta Mater., 37 - 4, (1997), 437-442.

DOI: 10.1016/s1359-6462(97)00132-2

Google Scholar

[6] P. B. Prangnell, C. Harris and S. M. Roberts, Finite element modeling of equal channel angular extrusion, Scripta Mater., 37 - 7, (1997).

DOI: 10.1016/s1359-6462(97)00192-9

Google Scholar