Effect of annealing on the texture and mechanical properties of pure Mg by ECAP at room temperature

Lei, Weiwei; Liang, Wei; Wang, Hongxia; Sun, Yanhao

doi:10.1016/j.vacuum.2017.08.016

Cited by 23 publications

(3 citation statements)

References 21 publications

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“…Several investigations can be found on the thermal stability of ECAP processed Mg-based alloys (like pure Mg and AZ31 alloy) mostly after isochronal annealing treatments [22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and texture evolution of ECAP-processed Mg-Ce alloy during isothermal annealing

Sadi

Hanna

Baudin

et al. 2022

Materials Today Communications

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Section: Introductionmentioning

confidence: 99%

Microstructure and texture evolution of ECAP-processed Mg-Ce alloy during isothermal annealing

Sadi

Hanna

Baudin

et al. 2022

Materials Today Communications

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“…The average grain size was calculated to be 37.9 ± 1.8 µm. A high peak of misorientation angle distribution was seen at 30 • , which is a typical characteristic for recrystallization of Mg [23], as shown in Figure 5b. Galiyev et al [24] and Yi et al [25] found that DRX grains of Mg alloys nucleated and grew at 30 • around the c-axis of the crystal.…”

Section: Microstructure Evolutionsmentioning

confidence: 81%

High Ductility with a Homogeneous Microstructure of a Mg–Al–Zn Alloy Prepared by Cyclic Expansion Extrusion with an Asymmetrical Extrusion Cavity

Yan

Zheng

Zhu

et al. 2020

Metals

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In the current work, cyclic expansion extrusion with an asymmetrical extrusion cavity (CEE-AEC), as a relatively novel severe plastic deformation method, was applied to fabricate an AZ31B magnesium alloy plate with a size of 50 × 100 × 220 mm, and the resultant microstructure, texture development, and mechanical properties were systematically investigated. A refined and homogeneous grain structure was achieved after three passes of deformation due to dynamic recrystallization. The grain refinement degree in comparison to as-cast alloys was more than ~96%. With the increasing number of CEE-AEC passes, a basal inclination texture was gradually formed, with the basal planes inclined ~45° from the transverse direction to the extrusion direction, which could be attributed to the introduction of an asymmetrical extrusion cavity that led to an increasing Schmid factor for the activation of basal <a> slip systems. The comprehensive mechanical properties were improved by successive multi-passes of CEE-AEC processing, especially due to the ductility reaching to 30.0 ± 1.3% after three passes of deformation. The competition between the grain refinement and texture modification were the main strengthening mechanisms.

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“…However, under conventional conditions, the ECAP of magnesium alloys can only be carried out at higher temperatures, which leads to grain growth during the pressing process and decreases the strengthening effect of ECAP. In this context, many scholars have begun to explore ways to reduce the pressing temperature, such as through the stepwise reduction of pressing temperature [9], the reduction of pressing speed [10], the application of back pressure [11,12], and a bread jacket outside the sample [13]. These methods all reduce the pressing temperature to a certain extent and the strengthening effect of ECAP is enhanced.…”

Section: Introductionmentioning

confidence: 99%

Effect of ECAP on the Microstructure and Mechanical Properties of a Rolled Mg-2Y-0.6Nd-0.6Zr Magnesium Alloy

Shi

et al. 2019

Crystals

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A fine-grained Mg-2Y-0.6Nd-0.6Zr alloy was processed by bar-rolling and equal-channel angular pressing (ECAP). The effect of ECAP on the microstructure and mechanical properties of rolled Mg-2Y-0.6Nd-0.6Zr alloy was investigated by optical microscopy, scanning electron microscopy, electron backscattered diffraction and a room temperature tensile test. The results show that the Mg-2Y-0.6Nd-0.6Zr alloy obtained high strength and poor plasticity after rolling. As the number of ECAP passes increased, the grain size of the alloy gradually reduced and the texture of the basal plane gradually weakened. The ultimate tensile strength of the alloy first increased and then decreased, the yield strength gradually decreased, and the plasticity continuously increased. After four passes of ECAP, the average grain size decreased from 11.2 µm to 1.87 µm, and the alloy obtained excellent comprehensive mechanical properties. Its strength was slightly reduced compared to the as-rolled alloy, but the plasticity was greatly increased.

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Effect of annealing on the texture and mechanical properties of pure Mg by ECAP at room temperature

Cited by 23 publications

References 21 publications

Microstructure and texture evolution of ECAP-processed Mg-Ce alloy during isothermal annealing

Microstructure and texture evolution of ECAP-processed Mg-Ce alloy during isothermal annealing

High Ductility with a Homogeneous Microstructure of a Mg–Al–Zn Alloy Prepared by Cyclic Expansion Extrusion with an Asymmetrical Extrusion Cavity

Effect of ECAP on the Microstructure and Mechanical Properties of a Rolled Mg-2Y-0.6Nd-0.6Zr Magnesium Alloy

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