Grain refinement vs. crystallographic texture: Mechanical anisotropy in a magnesium alloy

D. C. Foley; M. Al-Maharbi; K. T. Hartwig; I. Karaman; L. J. Kecskes; S. N. Mathaudhu

doi:10.1016/j.scriptamat.2010.09.042

Grain refinement vs. crystallographic texture: Mechanical anisotropy in a magnesium alloy

D. C. Foley, M. Al-Maharbi, K. T. Hartwig, I. Karaman, L. J. Kecskes, S. N. Mathaudhu

Mechanical and Industrial Engineering

Research output: Contribution to journal › Article › peer-review

89 Citations (Scopus)

Abstract

A magnesium alloy was subjected to severe plastic deformation via an unconventional equal channel angular extrusion route at decreasing temperatures. This method facilitates incremental grain refinement and enhances formability by activating dynamic recrystallization in the initial steps and suppressing deformation twinning. Compression experiments in three orthogonal directions demonstrated high strength levels in the processed sample, up to 350 MPa in yield and 500 MPa in ultimate strengths. Notable flow stress anisotropy is correlated with the processing texture and microstructure.

Original language	English
Pages (from-to)	193-196
Number of pages	4
Journal	Scripta Materialia
Volume	64
Issue number	2
DOIs	https://doi.org/10.1016/j.scriptamat.2010.09.042
Publication status	Published - Jan 2011

Keywords

Anisotropy
Crystallographic texture
Equal channel angular extrusion/pressing
Magnesium alloys
Ultrafine-grained materials

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/j.scriptamat.2010.09.042

Cite this

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abstract = "A magnesium alloy was subjected to severe plastic deformation via an unconventional equal channel angular extrusion route at decreasing temperatures. This method facilitates incremental grain refinement and enhances formability by activating dynamic recrystallization in the initial steps and suppressing deformation twinning. Compression experiments in three orthogonal directions demonstrated high strength levels in the processed sample, up to 350 MPa in yield and 500 MPa in ultimate strengths. Notable flow stress anisotropy is correlated with the processing texture and microstructure.",

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note = "Funding Information: This work was funded by the US Army Research Laboratory through contract W911QX-08-P-0640 . The authors acknowledge the important assistance of R. Barber and D. Krebs for ECAE processing. ",

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T2 - Mechanical anisotropy in a magnesium alloy

AU - Foley, D. C.

AU - Al-Maharbi, M.

AU - Hartwig, K. T.

AU - Karaman, I.

AU - Kecskes, L. J.

AU - Mathaudhu, S. N.

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AB - A magnesium alloy was subjected to severe plastic deformation via an unconventional equal channel angular extrusion route at decreasing temperatures. This method facilitates incremental grain refinement and enhances formability by activating dynamic recrystallization in the initial steps and suppressing deformation twinning. Compression experiments in three orthogonal directions demonstrated high strength levels in the processed sample, up to 350 MPa in yield and 500 MPa in ultimate strengths. Notable flow stress anisotropy is correlated with the processing texture and microstructure.

KW - Anisotropy

KW - Crystallographic texture

KW - Equal channel angular extrusion/pressing

KW - Magnesium alloys

KW - Ultrafine-grained materials

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Grain refinement vs. crystallographic texture: Mechanical anisotropy in a magnesium alloy

Abstract

Keywords

ASJC Scopus subject areas

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