Recent advances using equal-channel angular pressing to improve the properties of biodegradable Mg‒Zn alloys

Hashemi, Mahdieh; Alizadeh, Reza; Langdon, Terence G.

doi:10.1016/j.jma.2023.07.009

Cited by 33 publications

(2 citation statements)

References 122 publications

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“…Post-ECAP treatment, AZ61 + 4 wt.% Zn exhibited increased corrosion resistance, potentially associated with the size and distribution of second-phase particles [33]. The transformation of large, coarse second-phase particles to smaller sizes and a more uniform distribution after ECAP treatment was crucial for improved corrosion resistance [41]. The role of ECAP in influencing these microstructural features, especially the small and uniformly distributed second phase, proved essential in mitigating the micro-galvanic effect.…”

Section: Discussionmentioning

confidence: 99%

Effect of Zinc and Severe Plastic Deformation on Mechanical Properties of AZ61 Magnesium Alloy

Huang,

Wu,

Subramani

2024

Materials

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This study investigates the effects of zinc (4 wt.%) and severe plastic deformation on the mechanical properties of AZ61 magnesium alloy through the stir-casting process. Severe plastic deformation (Equal Channel Angular Pressing (ECAP)) has been performed followed by T4 heat treatment. The microstructural examinations revealed that the addition of 4 wt.% Zn enhances the uniform distribution of β-phase, contributing to a more uniformly corroded surface in corrosive environments. Additionally, dynamic recrystallization (DRX) significantly reduces the grain size of as-cast alloys after undergoing ECAP. The attained mechanical properties demonstrate that after a single ECAP pass, AZ61 + 4 wt.% Zn alloy exhibits the highest yield strength (YS), ultimate compression strength (UCS), and hardness. This research highlights the promising potential of AZ61 + 4 wt.% Zn alloy for enhanced mechanical and corrosion-resistant properties, offering valuable insights for applications in diverse engineering fields.

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Section: Discussionmentioning

confidence: 99%

Effect of Zinc and Severe Plastic Deformation on Mechanical Properties of AZ61 Magnesium Alloy

Huang,

Wu,

Subramani

2024

Materials

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“…At present, grain refinement of Mg-Zn alloys by adding heterogeneous nucleating agents or performing plastic deformation is one of the main research directions to solve the above problems. [2][3][4] Studies have shown that the addition of Zn and Ca, along with the inner stress concentration caused by extrusion, which promoted the activity of < c + a > slips, weaken the extrusion texture and refined the grain size of the alloy. As a result, the mechanical properties of the Mg alloy was improved, the elongation at room temperature reached 44%, and the yield strength (YS) and ultimate tensile strength (UTS) were 105 MPa and 205 MPa, respectively.…”

Section: Introductionmentioning

confidence: 99%

Research on grain refinement and tensile properties strengthening of screw rolled MgO/Mg-Zn-Ca composites

Zheng,

Zhang,

Chen

2024

Materials Science and Technology

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Herein, a gradient microstructure with an average grain size of 1.27 μm was obtained for 0.5MgO/Mg-3Zn-0.2Ca (wt.%) composites through screw rolling. Results show that screw rolling improved the comprehensive tensile properties of the composites, with the yield strength, ultimate tensile strength and elongation increasing from 167.3 MPa, 247.7 MPa and 27.4% to 256.6 MPa, 284.1 MPa and 40.6%, respectively, after eight deformation passes. The strength increments are primarily attributed to fine-grain strengthening. Further, the plasticity of the composites increased with increasing number of deformation passes because of the texture weakening and strain hardening decrement resulting from continuous dynamic recrystallisation. Overall, this study lays a foundation for research on magnesium matrix composites and their application in the field of biomedical materials.

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Low Anisotropy and High Ductility of Mg–Zn–Ce Alloy Achieved by the Optimized Thermo-mechanical Process

Qian,

Dong,

Jiang

et al. 2024

The Minerals, Metals &Amp; Materials Series

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Recent advances using equal-channel angular pressing to improve the properties of biodegradable Mg‒Zn alloys

Cited by 33 publications

References 122 publications

Effect of Zinc and Severe Plastic Deformation on Mechanical Properties of AZ61 Magnesium Alloy

Effect of Zinc and Severe Plastic Deformation on Mechanical Properties of AZ61 Magnesium Alloy

Research on grain refinement and tensile properties strengthening of screw rolled MgO/Mg-Zn-Ca composites

Low Anisotropy and High Ductility of Mg–Zn–Ce Alloy Achieved by the Optimized Thermo-mechanical Process

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