On plastic anisotropy and deformation history-driven anelasticity of an extruded magnesium alloy

Huai Wang; Soo Yeol Lee; Huamiao Wang; Wanchuck Woo; E. Wen Huang; Jayant Jain; Ke An

doi:10.1016/j.scriptamat.2019.09.025

On plastic anisotropy and deformation history-driven anelasticity of an extruded magnesium alloy

Huai Wang, Soo Yeol Lee, Huamiao Wang, Wanchuck Woo, E. Wen Huang, Jayant Jain, Ke An

Materials Engineering

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

19 Scopus citations

Abstract

The plastic anisotropy and unloading anelasticity of an extruded Mg-9 wt.%Al alloy (with two annealed textures) were investigated using in-situ neutron diffraction measurement and crystal plasticity modelling. The distinctive yielding and hardening behaviors during compressive and tensile loading-unloading cycles were interpreted by the alternative operations of different slip/twinning modes. We reveal that the micromechanical responses of differently-oriented grains strongly depend on their neighboring conditions and operative deformation mechanisms. Based on the modelling results, unloading anelasticity is hypothesized to be controlled by the plastic contribution of the hard deformation mode and its impeding effects on easier deformation modes.

Original language	English
Pages (from-to)	36-41
Number of pages	6
Journal	Scripta Materialia
Volume	176
DOIs	https://doi.org/10.1016/j.scriptamat.2019.09.025
State	Published - Feb 2020

Funding

This work was supported by a National Research Foundation (NRF) grant funded by the Korean government (Nos. 2017K1A3A7A09016308 and 2017M2A2A6A05017653). EWH appreciates Ministry of Science and Technology (MOST) Programs 107-2218-E-007-012, 107-2628-E-009-001-MY3 and 108-2221-E-009-131-MY4 and the NSRRC neutron program. HW acknowledges the funding support from the National Natural Science Foundation of China (No. 51975365). A portion of this research used resources at the Spallation Neutron Source, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory. Special thanks are given to Dr. Michael Gharghouri for the help during experiments. This work was supported by a National Research Foundation (NRF) grant funded by the Korean government (Nos. 2017K1A3A7A09016308 and 2017M2A2A6A05017653 ). EWH appreciates Ministry of Science and Technology (MOST) Programs 107-2218-E-007-012 , 107-2628-E-009-001-MY3 and 108-2221-E-009-131-MY4 and the NSRRC neutron program. HW acknowledges the funding support from the National Natural Science Foundation of China (No. 51975365 ). A portion of this research used resources at the Spallation Neutron Source, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory. Special thanks are given to Dr. Michael Gharghouri for the help during experiments.

Keywords

Anelastic behavior
Crystal plasticity
Deformation mechanism
Magnesium alloy
Plastic anisotropy

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abstract = "The plastic anisotropy and unloading anelasticity of an extruded Mg-9 wt.%Al alloy (with two annealed textures) were investigated using in-situ neutron diffraction measurement and crystal plasticity modelling. The distinctive yielding and hardening behaviors during compressive and tensile loading-unloading cycles were interpreted by the alternative operations of different slip/twinning modes. We reveal that the micromechanical responses of differently-oriented grains strongly depend on their neighboring conditions and operative deformation mechanisms. Based on the modelling results, unloading anelasticity is hypothesized to be controlled by the plastic contribution of the hard deformation mode and its impeding effects on easier deformation modes.",

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AU - Wang, Huai

AU - Lee, Soo Yeol

AU - Wang, Huamiao

AU - Woo, Wanchuck

AU - Huang, E. Wen

AU - Jain, Jayant

AU - An, Ke

PY - 2020/2

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AB - The plastic anisotropy and unloading anelasticity of an extruded Mg-9 wt.%Al alloy (with two annealed textures) were investigated using in-situ neutron diffraction measurement and crystal plasticity modelling. The distinctive yielding and hardening behaviors during compressive and tensile loading-unloading cycles were interpreted by the alternative operations of different slip/twinning modes. We reveal that the micromechanical responses of differently-oriented grains strongly depend on their neighboring conditions and operative deformation mechanisms. Based on the modelling results, unloading anelasticity is hypothesized to be controlled by the plastic contribution of the hard deformation mode and its impeding effects on easier deformation modes.

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On plastic anisotropy and deformation history-driven anelasticity of an extruded magnesium alloy

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Keywords

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