Effects of equal-channel angular pressing and accumulative roll-bonding on hydrogen storage properties of a commercial ZK60 magnesium alloy

Asselli, Alexandre Augusto Cesário; Leiva, Daniel Rodrigo; Huot, Jacques; Kawasaki, Megumi; Langdon, Terence G.; Filho, Walter José Botta

doi:10.1016/j.ijhydene.2015.05.149

Cited by 46 publications

(23 citation statements)

References 30 publications

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“…Besides, the Van't Hoff diagrams for the desorption processes of ECAPprocessed Mg and as-cast Mg hydrides showed that the entropy of MgH2 for the ECAP-processed Mg alloy samples was higher than that of their as-cast counterparts. A shorter incubation time was also found in the research by Asselli et al for ZK60 hydrogen storage material after six ECAP passes [20]. …”

Section: Dynamicssupporting

confidence: 76%

“…Besides, the Van't Hoff diagrams for the desorption processes of ECAP-processed Mg and as-cast Mg hydrides showed that the entropy of MgH 2 for the ECAP-processed Mg alloy samples was higher than that of their as-cast counterparts. A shorter incubation time was also found in the research by Asselli et al for ZK60 hydrogen storage material after six ECAP passes [20]. According to Skripnyuk [11], the first scholar to have investigated the effect of ECAP on the hydrogen storage properties of Mg alloy hydrides, commercial Mg alloy ZK60 showed a higher hydrogen storage property in both hydrogen capacity and the pressure hysteresis after eight passes of ECAP compared with its as-cast counterparts.…”

Section: Dynamicssupporting

confidence: 53%

“…It is important to know the hydrogen behaviors along grain boundaries in order to clarify whether hydrogen is trapped by a grain boundary or passes through the grain boundaries. There are some reports indicating that grain boundaries can serve as easy pathways for hydrogen penetration, which contributes to an improvement in hydrogenation kinetics as well as easy activation [43][44][45]; others gave the opinion that grain boundaries can act as nucleation sites for the hydride phase [20,40], which also lead to an enhancement in the kinetics of hydrogen absorption and desorption of Mg-based materials.…”

Section: Grain Boundariesmentioning

confidence: 99%

See 2 more Smart Citations

A Critical Review of Mg-Based Hydrogen Storage Materials Processed by Equal Channel Angular Pressing

Lisha

Jiang

et al. 2017

Metals

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Abstract:As a kind of cost-efficient hydrogen storage materials with high hydrogen capacity and light weight, Mg-based alloys have attracted much attention. This review introduces an effective technique in producing bulk ultrafine-grained (UFG) Mg alloys and promoting its hydrogen storage property, namely, equal-channel angular pressing (ECAP). This paper briefly describes the technical principle of ECAP and reviews the research progress on hydrogen storage properties of ECAP-processed Mg alloys. Special attention is given to their hydrogen storage behaviors including hydrogen storage dynamics, capacity, and cycling stability. Finally, it analyzes the factors that affect the hydrogen storage properties of ECAP-processed Mg alloys, such as the grain sizes, lattice defects, catalysts, and textures introduced by ECAP process.

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Section: Dynamicssupporting

confidence: 76%

Section: Dynamicssupporting

confidence: 53%

Section: Grain Boundariesmentioning

confidence: 99%

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A Critical Review of Mg-Based Hydrogen Storage Materials Processed by Equal Channel Angular Pressing

Lisha

Jiang

et al. 2017

Metals

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“…Metallographic study showed that the microstructure of the ingot was coarse with grain sizes larger than 500 µm [29]. Samples were prepared by filing the magnesium ingot using three commercial tools having different geometries and sizes of cutting edges.…”

Section: Methodsmentioning

confidence: 99%

“…In a recent paper we reported [29] the hydrogen storage properties of magnesium processed by ARB, filing and the combination of both techniques. We found that refining the microstructure of magnesium by ARB improved the hydrogen absorption/desorption kinetics at some extent, but a limited storage capacity was yielded due to the low surface area of the rolled samples.…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

Hydrogen storage in filed magnesium

Asselli

Santos

Huot

2016

Journal of Alloys and Compounds

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The Cold Angular Rolling Process of Copper Sheets: Unraveling Plastic Deformation Behavior and Unveiling Microstructural Transformations

Lee,

Bhatta,

et al. 2023

Adv Eng Mater

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The cold angular rolling process (CARP) is being developed as a continuous severe plastic deformation (SPD) technique, which can process metal sheets without any length limitations at room temperature. CARP contains cold rolling and equal‐channel angular process components. The sheet thickness is kept consistent before and after CARP, allowing multiple passes of the sheet. The desired microstructure and mechanical properties can be achieved in the processed metallic sheets. The current study is aimed to evaluate the capability of CARP by processing copper sheets with different sheet widths for repetitive passes. The CARP‐treated sheets are examined by lab‐scale X‐ray and high‐energy synchrotron X‐ray diffraction to investigate the evolution in dislocation density, texture, and strain anisotropy, and by tensile testing to identify the bulk mechanical properties. The digital image correlation (DIC) method is applied to tensile testing so that strain localization within the sample gauge was visualized and deformation behavior was evaluated after yielding till post‐necking by estimating the hardening exponent and strain hardening rate of the CARP‐treated sheet. Comparing the reported continuous and multiple‐step processes on Cu and its alloys, the present study confirms CARP is potentially a useful sheet process for strengthening ductile metals.This article is protected by copyright. All rights reserved.

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Effects of equal-channel angular pressing and accumulative roll-bonding on hydrogen storage properties of a commercial ZK60 magnesium alloy

Cited by 46 publications

References 30 publications

A Critical Review of Mg-Based Hydrogen Storage Materials Processed by Equal Channel Angular Pressing

A Critical Review of Mg-Based Hydrogen Storage Materials Processed by Equal Channel Angular Pressing

Hydrogen storage in filed magnesium

The Cold Angular Rolling Process of Copper Sheets: Unraveling Plastic Deformation Behavior and Unveiling Microstructural Transformations

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