Microstructure evolution during friction-stir welding of AZ31 magnesium alloy

S. Mironov; T. Onuma; Y. S. Sato; H. Kokawa

doi:10.1016/j.actamat.2015.08.066

Microstructure evolution during friction-stir welding of AZ31 magnesium alloy

S. Mironov, T. Onuma, Y. S. Sato, H. Kokawa

ENG - Materials Processing

Tohoku University

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

159 Citations (Scopus)

Abstract

The microstructure evolution of a typical hexagonal close-packed (HCP) material (AZ31 magnesium alloy) during friction stir welding was studied in a wide range of welding temperatures. In all cases, the grain structure development was found to be significantly influenced by the formation of a very strong {0 0 0 1} 'u w t v' B-fiber texture. Due to limitations imposed by this texture as well as by symmetry of the HCP crystal structure, an extensive lowering of grain-boundary misorientation was found to occur during deformation.

Original language	English
Article number	12394
Pages (from-to)	301-312
Number of pages	12
Journal	Acta Materialia
Volume	100
DOIs	https://doi.org/10.1016/j.actamat.2015.08.066
Publication status	Published - 2015 Nov 1

Keywords

Electron-backscatter diffraction (EBSD)
Friction-stir welding
Magnesium
Microstructure
Texture

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10.1016/j.actamat.2015.08.066

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title = "Microstructure evolution during friction-stir welding of AZ31 magnesium alloy",

abstract = "The microstructure evolution of a typical hexagonal close-packed (HCP) material (AZ31 magnesium alloy) during friction stir welding was studied in a wide range of welding temperatures. In all cases, the grain structure development was found to be significantly influenced by the formation of a very strong {0 0 0 1} 'u w t v' B-fiber texture. Due to limitations imposed by this texture as well as by symmetry of the HCP crystal structure, an extensive lowering of grain-boundary misorientation was found to occur during deformation.",

keywords = "Electron-backscatter diffraction (EBSD), Friction-stir welding, Magnesium, Microstructure, Texture",

author = "S. Mironov and T. Onuma and Sato, {Y. S.} and H. Kokawa",

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AU - Mironov, S.

AU - Onuma, T.

AU - Sato, Y. S.

AU - Kokawa, H.

PY - 2015/11/1

Y1 - 2015/11/1

N2 - The microstructure evolution of a typical hexagonal close-packed (HCP) material (AZ31 magnesium alloy) during friction stir welding was studied in a wide range of welding temperatures. In all cases, the grain structure development was found to be significantly influenced by the formation of a very strong {0 0 0 1} 'u w t v' B-fiber texture. Due to limitations imposed by this texture as well as by symmetry of the HCP crystal structure, an extensive lowering of grain-boundary misorientation was found to occur during deformation.

AB - The microstructure evolution of a typical hexagonal close-packed (HCP) material (AZ31 magnesium alloy) during friction stir welding was studied in a wide range of welding temperatures. In all cases, the grain structure development was found to be significantly influenced by the formation of a very strong {0 0 0 1} 'u w t v' B-fiber texture. Due to limitations imposed by this texture as well as by symmetry of the HCP crystal structure, an extensive lowering of grain-boundary misorientation was found to occur during deformation.

KW - Electron-backscatter diffraction (EBSD)

KW - Friction-stir welding

KW - Magnesium

KW - Microstructure

KW - Texture

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SP - 301

EP - 312

JO - Acta Materialia

JF - Acta Materialia

M1 - 12394

ER -

Microstructure evolution during friction-stir welding of AZ31 magnesium alloy

Abstract

Keywords

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