Effect of rare earth additions on the critical resolved shear stresses of magnesium alloys

V. Herrera-Solaz; P. Hidalgo-Manrique; M. T. Pérez-Prado; D. Letzig; J. Llorca; J. Segurado

doi:10.1016/j.matlet.2014.04.144

Effect of rare earth additions on the critical resolved shear stresses of magnesium alloys

V. Herrera-Solaz, P. Hidalgo-Manrique, M. T. Pérez-Prado, D. Letzig, J. Llorca, J. Segurado^*

^*Corresponding author for this work

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

Abstract

An inverse optimization strategy based on crystal plasticity finite element simulations of polycrystals was used to obtain the critical resolved shear stresses of two Mg-1%Mn alloys containing neodymium from macroscopic experimental data. It was found that, with respect to pure Mg, the presence of Nd increases the CRSS_basal, CRSS_twinning, and the CRSS_basal/CRSS_twinning ratio and decreases the CRSS _non-basal/CRSS_twinning ratio. Additions of neodymium as high as 1 wt% result in similar CRSSs values for all deformation modes and, thus, in an isotropic yielding behavior.

Original language	English
Pages (from-to)	199-203
Number of pages	5
Journal	Materials Letters
Volume	128
DOIs	https://doi.org/10.1016/j.matlet.2014.04.144
Publication status	Published - 1 Aug 2014

Keywords

Critical resolved shear stresses
Crystal plasticity
Inverse optimization
Magnesium alloys
Rare earths

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10.1016/j.matlet.2014.04.144

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abstract = "An inverse optimization strategy based on crystal plasticity finite element simulations of polycrystals was used to obtain the critical resolved shear stresses of two Mg-1%Mn alloys containing neodymium from macroscopic experimental data. It was found that, with respect to pure Mg, the presence of Nd increases the CRSSbasal, CRSStwinning, and the CRSSbasal/CRSStwinning ratio and decreases the CRSS non-basal/CRSStwinning ratio. Additions of neodymium as high as 1 wt% result in similar CRSSs values for all deformation modes and, thus, in an isotropic yielding behavior.",

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AU - Herrera-Solaz, V.

AU - Hidalgo-Manrique, P.

AU - Pérez-Prado, M. T.

AU - Letzig, D.

AU - Llorca, J.

AU - Segurado, J.

PY - 2014/8/1

Y1 - 2014/8/1

N2 - An inverse optimization strategy based on crystal plasticity finite element simulations of polycrystals was used to obtain the critical resolved shear stresses of two Mg-1%Mn alloys containing neodymium from macroscopic experimental data. It was found that, with respect to pure Mg, the presence of Nd increases the CRSSbasal, CRSStwinning, and the CRSSbasal/CRSStwinning ratio and decreases the CRSS non-basal/CRSStwinning ratio. Additions of neodymium as high as 1 wt% result in similar CRSSs values for all deformation modes and, thus, in an isotropic yielding behavior.

AB - An inverse optimization strategy based on crystal plasticity finite element simulations of polycrystals was used to obtain the critical resolved shear stresses of two Mg-1%Mn alloys containing neodymium from macroscopic experimental data. It was found that, with respect to pure Mg, the presence of Nd increases the CRSSbasal, CRSStwinning, and the CRSSbasal/CRSStwinning ratio and decreases the CRSS non-basal/CRSStwinning ratio. Additions of neodymium as high as 1 wt% result in similar CRSSs values for all deformation modes and, thus, in an isotropic yielding behavior.

KW - Critical resolved shear stresses

KW - Crystal plasticity

KW - Inverse optimization

KW - Magnesium alloys

KW - Rare earths

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DO - 10.1016/j.matlet.2014.04.144

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EP - 203

JO - Materials Letters

JF - Materials Letters

ER -

Effect of rare earth additions on the critical resolved shear stresses of magnesium alloys

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Keywords

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