Plastic deformation and dynamic recrystallization behaviors of Mg-5Gd-4Y-0.5Zn-0.5Zr alloy

Z. Yang; Y. C. Guo; J. P. Li; F. He; F. Xia; M. X. Liang

doi:10.1016/j.msea.2007.08.069

Plastic deformation and dynamic recrystallization behaviors of Mg-5Gd-4Y-0.5Zn-0.5Zr alloy

Z. Yang, Y. C. Guo, J. P. Li, F. He, F. Xia, M. X. Liang

Xi'an Technological University

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

128 Scopus citations

Abstract

A newly developed magnesium alloy Mg-5Gd-4Y-0.5Zn-0.5Zr (GWZ540) was hot extruded and then compressed at temperatures between 573 and 673 K and strain rates ranging from 2 × 10^-4 to 2 × 10^-1 s^-1. The stress-strain behaviors and volume fraction of dynamic recrystallized (DRX) grains were determined. It is shown that the form of the flow stress curves is sensitive to temperature and strain rate and DRX mechanisms of the alloy varied as deformation progresses. High density dislocation was formed at boundaries of coarse grains and around some particles of second phase at first. Dislocation cell walls then were formed and converted into subgrain boundaries. New recrystallized grains were formed finally at the base of subgrain boundaries and particles of second phase.

Original language	English
Pages (from-to)	487-491
Number of pages	5
Journal	Materials Science and Engineering: A
Volume	485
Issue number	1-2
DOIs	https://doi.org/10.1016/j.msea.2007.08.069
State	Published - 25 Jun 2008
Externally published	Yes

Keywords

Deformation
Dynamic recrystallization
Mg alloy
Mg-5Gd-4Y-0.5Zn-0.5Zr
Microstructure evolution

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10.1016/j.msea.2007.08.069

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title = "Plastic deformation and dynamic recrystallization behaviors of Mg-5Gd-4Y-0.5Zn-0.5Zr alloy",

abstract = "A newly developed magnesium alloy Mg-5Gd-4Y-0.5Zn-0.5Zr (GWZ540) was hot extruded and then compressed at temperatures between 573 and 673 K and strain rates ranging from 2 × 10-4 to 2 × 10-1 s-1. The stress-strain behaviors and volume fraction of dynamic recrystallized (DRX) grains were determined. It is shown that the form of the flow stress curves is sensitive to temperature and strain rate and DRX mechanisms of the alloy varied as deformation progresses. High density dislocation was formed at boundaries of coarse grains and around some particles of second phase at first. Dislocation cell walls then were formed and converted into subgrain boundaries. New recrystallized grains were formed finally at the base of subgrain boundaries and particles of second phase.",

keywords = "Deformation, Dynamic recrystallization, Mg alloy, Mg-5Gd-4Y-0.5Zn-0.5Zr, Microstructure evolution",

author = "Z. Yang and Guo, {Y. C.} and Li, {J. P.} and F. He and F. Xia and Liang, {M. X.}",

year = "2008",

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doi = "10.1016/j.msea.2007.08.069",

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TY - JOUR

T1 - Plastic deformation and dynamic recrystallization behaviors of Mg-5Gd-4Y-0.5Zn-0.5Zr alloy

AU - Yang, Z.

AU - Guo, Y. C.

AU - Li, J. P.

AU - He, F.

AU - Xia, F.

AU - Liang, M. X.

PY - 2008/6/25

Y1 - 2008/6/25

N2 - A newly developed magnesium alloy Mg-5Gd-4Y-0.5Zn-0.5Zr (GWZ540) was hot extruded and then compressed at temperatures between 573 and 673 K and strain rates ranging from 2 × 10-4 to 2 × 10-1 s-1. The stress-strain behaviors and volume fraction of dynamic recrystallized (DRX) grains were determined. It is shown that the form of the flow stress curves is sensitive to temperature and strain rate and DRX mechanisms of the alloy varied as deformation progresses. High density dislocation was formed at boundaries of coarse grains and around some particles of second phase at first. Dislocation cell walls then were formed and converted into subgrain boundaries. New recrystallized grains were formed finally at the base of subgrain boundaries and particles of second phase.

AB - A newly developed magnesium alloy Mg-5Gd-4Y-0.5Zn-0.5Zr (GWZ540) was hot extruded and then compressed at temperatures between 573 and 673 K and strain rates ranging from 2 × 10-4 to 2 × 10-1 s-1. The stress-strain behaviors and volume fraction of dynamic recrystallized (DRX) grains were determined. It is shown that the form of the flow stress curves is sensitive to temperature and strain rate and DRX mechanisms of the alloy varied as deformation progresses. High density dislocation was formed at boundaries of coarse grains and around some particles of second phase at first. Dislocation cell walls then were formed and converted into subgrain boundaries. New recrystallized grains were formed finally at the base of subgrain boundaries and particles of second phase.

KW - Deformation

KW - Dynamic recrystallization

KW - Mg alloy

KW - Mg-5Gd-4Y-0.5Zn-0.5Zr

KW - Microstructure evolution

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U2 - 10.1016/j.msea.2007.08.069

DO - 10.1016/j.msea.2007.08.069

M3 - 文章

AN - SCOPUS:42149090563

SN - 0921-5093

VL - 485

SP - 487

EP - 491

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

IS - 1-2

ER -

Plastic deformation and dynamic recrystallization behaviors of Mg-5Gd-4Y-0.5Zn-0.5Zr alloy

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Keywords

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