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Meeting 2021 TMS Annual Meeting & Exhibition
Symposium Magnesium Technology 2021
Presentation Title Microstructure and properties of Mg-Gd-Y-Zn-Zr alloy fabricated by centrifugal casting and ring-rolling process
Author(s) Xiaodong Peng, Zhenduo Ma, Guobing Wei, Yan Yang, Tiancai Xu
On-Site Speaker (Planned) Xiaodong Peng
Abstract Scope Ring-shaped Mg-8.5Gd-4Y-1Zn-0.4Zr (wt %) alloy was produced by centrifugal casting and ring-rolling process. The effects of different accumulative ring-rolling reductions on the microstructure, mechanical properties and texture of the alloy were investigated. The results indicate that the as-cast microstructure consists mainly of equiaxed grains and network eutectic phase distributing at the grain boundaries. The ring-rolled alloys exhibit a bimodal microstructure composed of fine dynamic recrystallized (DRXed) grains with weak basal texture and coarse un-DRXed grains with strong basal texture. With the increase of accumulative ring-rolling reduction, the coarse un-DRXed grains are refined and the volume fraction of fine DRXed grains is increased significantly. The mechanical properties of ring-rolled alloy are improved and reach 510 MPa of UTS and 435 MPa of YS after aging. In addition, strengthening mechanism of the alloy is discussed and is related to the bimodal microstructure, mainly concerned with lamellar LPSO phases and dynamic precipitated phases.
Proceedings Inclusion? Planned:


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Efficient Low-Cost Gravity-Driven Multiple Effect Thermal System (G-METS) Distillation of Magnesium
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Exploring Calcium for Improving Properties of Magnesium Alloys with a Destination for Rolled Sheet
Hardening effects of sheared precipitates on twinning in magnesium alloys
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Influence of layer thickness on deformation twinning in Mg/Nb laminates
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Lanthanum Phosphate Coating on Magnesium Alloys for Biomedical Application, Developed via Sol-Gel and Chemical Conversion Route
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Measurement of the Critical Resolved Shear Stress for Slip in Mg Alloys Using Instrumented Indentation
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Microstructural characterization and hardness of rapidly solidified Mg-Si alloys
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Microstructure and properties of Mg-Gd-Y-Zn-Zr alloy fabricated by centrifugal casting and ring-rolling process
Numerical Study of Multi-axial Loading Behavior of Mg Alloy AZ31 Extruded Bar
On the Role of Crystallographic Anisotropy and Texture in Damage Tolerance of Magnesium and its Alloys
Optimization of Mechanical Properties in Magnesium Zinc Alloys
Preparation of Thin-walled Magnesium AZ31 Alloy Tubes Using Friction Stir Extrusion
Quantitative analysis of impurity elements in pure magnesium by glow-discharge mass spectrometry (GDMS)
Quasi-static and Dynamic Rate Mechanical Behavior and Microstructural Investigation of High-purity Mg and AZ31B Alloy
Research on extracting magnesium from carbide slag and magnesite in flowing argon atmosphere
Revisiting Pyramidal Slip in Magnesium
Role of microstructural heterogeneities in damage formation and fracture of coarse-grained Mg during tensile loading
Role of temperature and pre-strain in fatigue strength of WE43-T5 magnesium alloy
Texture and Microstructure Evolution in Thermomechanically Processed Mg-Ca and Mg-Zn-Ca Alloys
The effects of basal and prismatic precipitates on deformation twinning in AZ91 magnesium alloy
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Thermally activated nature of basal and prismatic slip in Mg and its alloys
Three dimensional atomistic simulations of {101 ̅2} non-cozone twin-twin interaction in Mg – Role of twin stability and mobility
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Understanding Twinning-detwinning Behavior of Unalloyed Mg during Low-cycle Fatigue Using High Energy X-ray Diffraction
In situ study of Mg-Zn alloy degradation mechanisms towards advancing in vitro testing

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