Preferential dynamic recrystallization at original grain boundaries in the hot-rolling process of AZ31 alloy

Zhen Zhang; Ming Pu Wang; Shuo Zhu; Nian Jiang

doi:10.1016/j.jallcom.2012.07.116

Preferential dynamic recrystallization at original grain boundaries in the hot-rolling process of AZ31 alloy

Zhen Zhang^*, Ming Pu Wang, Shuo Zhu, Nian Jiang

^*Corresponding author for this work

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

18 Citations (Scopus)

Abstract

Single pass hot-rolling was conducted on commercial AZ31 magnesium alloy. Dynamic recrystallization (DRX) preferentially initiated at original grain boundaries in the hot-rolling process, producing the characteristic necklace-like microstructure at higher strain stage. Electron back-scattering diffraction (EBSD) was used to investigate this preferential DRX at grain boundaries. Progressive orientation gradient was found to be involved in subgrain formation, while DRX did not follow previous orientation gradient from matrix and had a tendency to align their (0 0 0 2) plane with shearing plane as they got close to the middle layer of DRX region, which was ascribed to the expanding effect of localized shearing strain.

Original language	English
Pages (from-to)	159-165
Number of pages	7
Journal	Journal of Alloys and Compounds
Volume	544
DOIs	https://doi.org/10.1016/j.jallcom.2012.07.116
Publication status	Published - 15 Dec 2012
Externally published	Yes

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10.1016/j.jallcom.2012.07.116

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title = "Preferential dynamic recrystallization at original grain boundaries in the hot-rolling process of AZ31 alloy",

abstract = "Single pass hot-rolling was conducted on commercial AZ31 magnesium alloy. Dynamic recrystallization (DRX) preferentially initiated at original grain boundaries in the hot-rolling process, producing the characteristic necklace-like microstructure at higher strain stage. Electron back-scattering diffraction (EBSD) was used to investigate this preferential DRX at grain boundaries. Progressive orientation gradient was found to be involved in subgrain formation, while DRX did not follow previous orientation gradient from matrix and had a tendency to align their (0 0 0 2) plane with shearing plane as they got close to the middle layer of DRX region, which was ascribed to the expanding effect of localized shearing strain.",

keywords = "Electron back-scattering diffraction (EBSD), Mechanical processing, Metals and alloys, Microstructure",

author = "Zhen Zhang and Wang, {Ming Pu} and Shuo Zhu and Nian Jiang",

year = "2012",

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day = "15",

doi = "10.1016/j.jallcom.2012.07.116",

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journal = "Journal of Alloys and Compounds",

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T1 - Preferential dynamic recrystallization at original grain boundaries in the hot-rolling process of AZ31 alloy

AU - Zhang, Zhen

AU - Wang, Ming Pu

AU - Zhu, Shuo

AU - Jiang, Nian

PY - 2012/12/15

Y1 - 2012/12/15

N2 - Single pass hot-rolling was conducted on commercial AZ31 magnesium alloy. Dynamic recrystallization (DRX) preferentially initiated at original grain boundaries in the hot-rolling process, producing the characteristic necklace-like microstructure at higher strain stage. Electron back-scattering diffraction (EBSD) was used to investigate this preferential DRX at grain boundaries. Progressive orientation gradient was found to be involved in subgrain formation, while DRX did not follow previous orientation gradient from matrix and had a tendency to align their (0 0 0 2) plane with shearing plane as they got close to the middle layer of DRX region, which was ascribed to the expanding effect of localized shearing strain.

AB - Single pass hot-rolling was conducted on commercial AZ31 magnesium alloy. Dynamic recrystallization (DRX) preferentially initiated at original grain boundaries in the hot-rolling process, producing the characteristic necklace-like microstructure at higher strain stage. Electron back-scattering diffraction (EBSD) was used to investigate this preferential DRX at grain boundaries. Progressive orientation gradient was found to be involved in subgrain formation, while DRX did not follow previous orientation gradient from matrix and had a tendency to align their (0 0 0 2) plane with shearing plane as they got close to the middle layer of DRX region, which was ascribed to the expanding effect of localized shearing strain.

KW - Electron back-scattering diffraction (EBSD)

KW - Mechanical processing

KW - Metals and alloys

KW - Microstructure

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DO - 10.1016/j.jallcom.2012.07.116

M3 - Article

AN - SCOPUS:84866001620

SN - 0925-8388

VL - 544

SP - 159

EP - 165

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Preferential dynamic recrystallization at original grain boundaries in the hot-rolling process of AZ31 alloy

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