Study of the Microstructure, Tensile Properties and Hardness of AZ61 Magnesium Alloy Subjected to Severe Plastic Deformation

Hilšer, Ondřej; Rusz, Stanislav; Szkandera, Pavel; Čížek, L.; Kraus, Martin; Džugan, Ján; Maziarz, W.

doi:10.3390/met8100776

Cited by 15 publications

(8 citation statements)

References 26 publications

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“…Comparison of AZT411 alloy in this work with other Mg–Al–Zn–Sn and Mg–Al–Zn‐based alloys (ECAP, [ 28,32–34,55 ] rolling, [ 56–58 ] extruded [ 6,41,59–63 ] ) in studies.…”

Section: Resultsmentioning

confidence: 99%

Tailoring Mechanical Properties of Mg–Al–Zn–Sn–Mn Alloy by Multipass Equal Channel Angular Pressing

et al. 2020

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Herein, the influence of equal channel angular pressing (ECAP) routes, i.e., A and Bc, on the microstructure and texture evolution of a Mg–3.7Al–0.7Zn–0.8Sn–0.4Mn (wt%) alloy is investigated by scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), and X‐ray diffraction (XRD). It is found that with increasing the number of ECAP passes, the area fraction of the dynamically precipitated secondary‐phase particles increases, whereas particle size becomes larger. After four and six passes of ECAP via route A, shear deformation induced by ECAP promotes the incline of c‐axes toward extrusion direction (ED). The optimum room temperature (RT) mechanical properties (yield strength of ≈225 MPa, ultimate tensile strength of ≈312 MPa, and elongation to fracture of ≈31.9%) are obtained after four passes of ECAP at 200 °C via route A. The improved strength results from fine dynamic recrystallization (DRX)/ed grains, nanoscale secondary‐phase particles, and basal texture. Herein, it is indicated that Mg–Al–Zn–Sn alloys have great potential as low‐cost high‐strength‐ductility wrought Mg alloys.

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“…Comparison of AZT411 alloy in this work with other Mg–Al–Zn–Sn and Mg–Al–Zn‐based alloys (ECAP, [ 28,32–34,55 ] rolling, [ 56–58 ] extruded [ 6,41,59–63 ] ) in studies.…”

Section: Resultsmentioning

confidence: 99%

Tailoring Mechanical Properties of Mg–Al–Zn–Sn–Mn Alloy by Multipass Equal Channel Angular Pressing

et al. 2020

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“…With increased demands for reducing structure weight as well as reducing energy consumption in aviation and automobile industries, magnesium (Mg) alloys are attracting increased attention due to their excellent properties such as lightweight and high specific strength [1][2][3][4]. While these structural components are achieved largely through using forming processes, study of Mg alloys thermal deformation behavior and microstructure evolution is a prerequisite for ensuring to produce high-performance workpieces of Mg alloys.…”

Section: Introductionmentioning

confidence: 99%

Simulation of dynamic recrystallization of a magnesium alloy with a cellular automaton method coupled with adaptive activation energy and matrix deformation topology

Wang

et al. 2021

Manufacturing Rev.

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The cellular automata (CA) model combining topological deformation and adaptive activation energy was successfully constructed to analyze the thermal dynamic recrystallization of the magnesium alloy (AZ61). The simulation datum shown that the recrystallization nucleation located on the grain boundary (GB) once the density of dislocation accumulated to specific value, and the result presents a typical characteristics i.e., repeated nucleation and growth. The simulation results agree well with the experimental results because the activation energy affects recrystallization by affecting nucleation rate.

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“…A modified ECAP called C-shape ECAP was developed to improve the hardness of AZ31 [20]. Another modified ECAP combining ECAP and twist extrusion was developed to improve the strength and elongation of magnesium alloys AZ61 [21]. Magnesium alloy AZ91 with high mechanical properties was processed by ECAP and subsequent low temperature rolling [22].…”

Section: Introductionmentioning

confidence: 99%

Gradients of Strain to Increase Strength and Ductility of Magnesium Alloys

Liu

Cai

2019

Metals

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A strain gradient was produced in an AZ31B magnesium alloy through a plastic deformation of pure torsion at a torsional speed of π/2 per second. Compared with the base material and with the alloy processed by conventional severe plastic deformation, the magnesium alloy provided with a strain gradient possesses high strength preserving its ductility. Microstructural observations show that strain gradient induces the formation of an inhomogeneous microstructure characterized by statistically stored dislocation (SSD) density gradient and geometrically necessary dislocation (GND). GNDs and dislocation density gradient provide extra strain hardening property, which contributes to the improvement of ductility. The combination of SSD density gradient and GND can simultaneously improve the strength and ductility of magnesium alloy.

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Study of the Microstructure, Tensile Properties and Hardness of AZ61 Magnesium Alloy Subjected to Severe Plastic Deformation

Cited by 15 publications

References 26 publications

Tailoring Mechanical Properties of Mg–Al–Zn–Sn–Mn Alloy by Multipass Equal Channel Angular Pressing

Tailoring Mechanical Properties of Mg–Al–Zn–Sn–Mn Alloy by Multipass Equal Channel Angular Pressing

Simulation of dynamic recrystallization of a magnesium alloy with a cellular automaton method coupled with adaptive activation energy and matrix deformation topology

Gradients of Strain to Increase Strength and Ductility of Magnesium Alloys

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