Effect of Microstructures on Tensile Properties of AZ31 Mg Alloy Processed by ECAP

Yuichi Miyahara; Kazuhiko Adachi; Yasuhiro Maehara; Z. Horita; Terence G. Langdon

doi:10.4028/www.scientific.net/MSF.488-489.473

Paper Titles

Formability and Process Conditions of Magnesium Alloy Sheets
p.453

Finite Element Analysis of Press Forging Process of AZ31 Sheet
p.457

Improved Formability and Deep Drawing of Cross-Rolled Magnesium Alloy Sheets at Elevated Temperatures
p.461

Grain Refining of Magnesium Alloy AZ 31 by Equal Channel Angular Extrusion
p.465

Effect of Microstructures on Tensile Properties of AZ31 Mg Alloy Processed by ECAP
p.473

Development of a Moderate Temperature Bending Process for Magnesium Alloy Extrusions
p.477

Evaluation of Magnesium Extrusion Production
p.483

Warm Lateral Extrusion of Magnesium Wrought Alloy by Using Multi-Axes Material Testing Machine
p.487

Hydrostatic and Indirect Extrusion of AZ-Magnesium Alloys
p.491

HomeMaterials Science ForumMaterials Science Forum Vols. 488-489Effect of Microstructures on Tensile Properties of...

Effect of Microstructures on Tensile Properties of AZ31 Mg Alloy Processed by ECAP

Abstract:

A commercial AZ31 Mg alloy was subjected to ECAP (equal-channel angular pressing) and the tensile properties were examined at room temperature. It is shown that the microstructure before ECAP significantly affects the performance of ECAP without breaking samples. When the initial structure before ECAP is homogeneous with equiaxed grains, subsequent ECAP is feasible at lower temperatures. The grain refinement is achieved more effectively as the temperature for ECAP is lowered and the number of ECAP pass is increased. The tensile ductility was reduced after 1 pass of ECAP at 473 K or 498 K. However, the ductility was improved with an increasing number of ECAP pass or by annealing at 473 K or 523 K after ECAP. The results demonstrate that a homogeneous distribution of fine equiaxed grains is important for ductility improvement in the AZ31 Mg alloy.

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Periodical:

Materials Science Forum (Volumes 488-489)

Pages:

473-476

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.488-489.473

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Online since:

July 2005

Authors:

Yuichi Miyahara, Kazuhiko Adachi, Yasuhiro Maehara, Z. Horita, Terence G. Langdon

Keywords:

AZ31 Alloy, Equal-Channel Angular Pressing (ECAP), Microstructure, Tensile Properties

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References

[1] A. Yamashita, Z. Horita and T.G. Langdon : Mater. Sci. Eng. Vol. A300 (2001), pp.142-147.

Google Scholar

[2] T. Mukai, M. Yamanoi, H. Watanabe and K. Higashi : Scripta. Mater. Vol. 45 (2001), pp.89-94.

Google Scholar

[3] Y. Yoshida, L. Cisar, S. Kamado and Y. Kojima : Mater. Trans. Vol. 44 (2003), pp.468-475.

Google Scholar

[4] S.R. Agnew, J.A. Horton. T.M. Lillo and D.W. Brown : Scripta Mater. Vol. 50 (2004), pp.377-381.

Google Scholar

[5] W.J. Kim, C.W. An, Y.S. Kim and S.I. Hong : Scripta Mater. Vol. 47 (2002), pp.39-44. Fig. 4 Microstructures after 1 pass of ECAP at 473 K: (a) before annealing, (b) after annealing at 473 K, and (c) after annealing at 523 K. (a) (b) (c).

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