Investigation into the Extrudability of a New Mg-Al-Zn-RE Alloy with Large Amounts of Alloying Elements

Bai, Shuo; Fang, Gang; Zhou, Jie

doi:10.1007/s11661-019-05242-9

Cited by 17 publications

(6 citation statements)

References 68 publications

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“…[170] The extrusion limit of wrought magnesium alloys is influenced strongly by the alloy composition. [173,174] For alloys such as AZ31, the maximum extrusion (die exit) speed is typically less than 20 m min À1 . A trend of the extrusion alloy development is to reduce the total content of alloying additions in the alloy [175] to increase the extrusion speed and therefore reduce the processing cost.…”

Section: B Plastic Deformation Of Rolled Plates and Sheetsmentioning

confidence: 99%

Microstructure, Deformation, and Property of Wrought Magnesium Alloys

Nie

Shin

Zeng

2020

Metall Mater Trans A

140

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Pure magnesium (Mg) develops a strong basal texture after conventional processing of hot rolling or extrusion. Consequently, it exhibits anisotropic mechanical properties and is difficult to form at room temperature. Adding appropriate alloying elements can weaken the basal texture or even change it, but the improvement in formability and mechanical properties is still far from expectations. Over the past 20 years, considerable efforts have been made and significant progress has been made on wrought Mg alloys at the fundamental and technological levels. At the fundamental level, textures formed in sheets and extrusions of different alloy compositions and produced under different strain paths or thermomechanical processing conditions are relatively well established, with the assistance of the advanced characterization technique of electron backscatter diffraction. At the technological level, room temperature formability of sheet has been significantly improved, and tension-compression yield asymmetry of extrusion is also remarkably reduced or eliminated. This paper starts with an overview of dislocations, stacking faults and twins, and deformation of single crystals of pure Mg along different orientations and under different loading conditions, followed by a review of microstructure (texture and grain size) and deformation of polycrystalline pure Mg with different textures, grain sizes, and loading conditions. With this information as a base, texture, grain size, and deformation of polycrystalline Mg alloy sheets and extrusions produced under different processing conditions are systematically examined and compared. Remaining and emerging scientific and technology issues are then highlighted and discussed in the context of texture and grain size. The need for better-resolution diffraction and spectroscopy techniques is also discussed in the relationship between texture change and grain boundary solute segregation.

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Section: B Plastic Deformation Of Rolled Plates and Sheetsmentioning

confidence: 99%

Microstructure, Deformation, and Property of Wrought Magnesium Alloys

Nie

Shin

Zeng

2020

Metall Mater Trans A

140

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“…1. The average grain size of the Mg-Al-Zn-RE alloy was 165 ± 5 μm [21], while the grain sizes of pure magnesium were much larger. Only one complete grain of pure magnesium could be observed in the field of view at the lowest magnification (50) of the optical microscope used.…”

Section: Experiments and Fe Simulation 21 Materialsmentioning

confidence: 92%

“…Heat transfer between the extrusion tooling and billet was allowed in the FE model. The thermal properties of the billet and tooling were as the same as those used in a previous study [21], in which the FE model was validated by performing extrusion experiments. The shear friction model with a friction coefficient of 1.0 was adopted between the tooling and billet [23].…”

Section: Finite Element Simulations Of Extrusionmentioning

confidence: 99%

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Investigation into Atomic Diffusion at the Interface During Extrusion Welding of Magnesium and Magnesium Alloys

Bai

Fang

Jiang

et al. 2021

Metall Mater Trans A

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“…Mg–Al–Zn–RE and Mg–RE–Zr materials have been widely used in preparing high‐strength alloy materials. [ 25,26 ] Kowalski et al [ 27 ] have fabricated Mg–4Y–5.5Dy–0.5Zr material for enhanced compressive strength via mechanical alloying and powder metallurgy. Ren et al [ 28 ] have prepared Mg–Al–Zn–Y alloy with excellent mechanical property by thermo fuse strategy.…”

Section: Introductionmentioning

confidence: 99%

Microstructures and electrochemical behaviors of as‐cast magnesium alloys with enhanced compressive strengths and corrosion decomposition

Tian

et al. 2020

Materials & Corrosion

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Rapidly disintegrating alloys with enhanced compressive strengths and corrosion rates are prepared for fracturing parts in petroleum extraction. Extrusion casting is used to prepare Mg-xZn-Zr alloys by adjusting zinc content. Mechanical and electrochemical behaviors are investigated to evaluate the practicability as decomposable materials. Superficial topographies, compositions, phases, and distributions are also characterized to determine the dissociative mechanism. The results make clear that matrixes and secondary structures with reticulate shapes arise on surfaces. The material also possesses enhanced compressive strength to guarantee stabilization and pressureholding ability among decomposition. Concurrently, with the increase of zinc content and decomposition time, galvanic corrosion aggravates resulting in gradually reduced corrosion potentials and accelerated decomposition rates. Rapid material dissolution mainly attributes to anode corrosion of matrixes, peeling of microparticles, and inferior tolerance of corrosive products to dissolution. Such work highlights potential applications of fracturing materials for ensuring rapid decomposition and guaranteeing stable stress tolerance.

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Investigation into the Extrudability of a New Mg-Al-Zn-RE Alloy with Large Amounts of Alloying Elements

Abstract: Important note To cite this publication, please use the final published version (if applicable). Please check the document version above.

Cited by 17 publications

References 68 publications

Microstructure, Deformation, and Property of Wrought Magnesium Alloys

Microstructure, Deformation, and Property of Wrought Magnesium Alloys

Investigation into Atomic Diffusion at the Interface During Extrusion Welding of Magnesium and Magnesium Alloys

Microstructures and electrochemical behaviors of as‐cast magnesium alloys with enhanced compressive strengths and corrosion decomposition

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