Grain Refinement Mechanisms in Gradient Nanostructured AZ31B Mg Alloy Prepared via Rotary Swaging

Chen, Xin; Liu, Chuming; Wan, Yingchun; Jiang, Shunong; Chen, Zhiyong; Zhao, Yongli

doi:10.1007/s11661-021-06364-9

Cited by 24 publications

(3 citation statements)

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“…Coincidentally, RS can substantially enhance the plasticity of HCP metals by 2-axial compressive stress. Surprisingly, Wan et al prepared a bulk nano-gradient AZ31B Mg alloy [69]. As shown in Figure 8a, the swaging process increases the overall micro-hardness, and gradually forms Λ-shape distributions along the radial direction.…”

Section: Rotary Swaged Hexagonal Close-packed Metalsmentioning

confidence: 99%

Nano-Gradient Materials Prepared by Rotary Swaging

Chen

Zhao

2021

Nanomaterials

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Gradient nanostructured metallic materials with a nanostructured surface layer show immense potential for various industrial applications because of their outstanding mechanical, fatigue, corrosion, tribological properties, etc. In the past several decades, various methods for fabricating gradient nanostructure have been developed. Nevertheless, the thickness of gradient microstructure is still in the micrometer scale due to the limitation of preparation techniques. As a traditional but potential technology, rotary swaging (RS) allows gradient stress and strain to be distributed across the radial direction of a bulk cylindrical workpiece. Therefore, in this review paper, we have systematically summarized gradient and even nano-gradient materials prepared by RS. We found that metals processed by RS usually possess inverse nano-gradient, i.e., nano-grains appear in the sample center, texture-gradient and dislocation density-gradient along the radial direction. Moreover, a broad gradient structure is distributed from center to edge of the whole processed rods. In addition, properties including micro-hardness, conductivity, corrosion, etc., of RS processed metals are also reviewed and discussed. Finally, we look forward to the future prospects and further research work for the RS processed materials.

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Section: Rotary Swaged Hexagonal Close-packed Metalsmentioning

confidence: 99%

Nano-Gradient Materials Prepared by Rotary Swaging

Chen

Zhao

2021

Nanomaterials

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“…ECAP is widely used as a mechanical process of grain refinement; it has the advantage of creating a high amount of deformation without changes in specimen shape. Since its introduction, it has undergone several modifications to be applied to sheets [37] or to be repeated several times without the sample leaving the die by using a rotary-die [38,39]. Copper-Zinc (Cu-Zn) brasses are of considerable interest for studying the deformation mechanisms whenever SFE is involved; their good castability allows preparing massive ingots with the possibility of controlling SFE through the zinc content.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and activation volume of a Cu-6 wt %Zn brass processed by equal channel angular pressing

Turki,

Guelorget,

Optasanu

et al. 2023

Journal of Alloys and Compounds

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“…High pressure torsion [21] produces grains below 100 nm but the small specimen size prevents a possible industrial application. Recently, rotary swaging was used to refine grains in Mg alloys and can also be applied to alloys of a low cold workability [22,23]; thus grains of 80 nm in size were obtained in Mg-Gd-Y-Zr alloy [24]. It is worth recalling that in practice, controlling grain size in the nanometer range is difficult since the nonequilibrium state is the common character of the obtained microstructures [25].…”

Section: Introductionmentioning

confidence: 99%