Effect of initial powder type on the hydrogen storage properties of high-pressure torsion consolidated Mg

Panda, Subrata; Fundenberger, Jean-Jacques; Zhao, Yajun; Zou, Jianxin; Tóth, László; Grosdidier, Thierry

doi:10.1016/j.ijhydene.2017.05.097

Cited by 37 publications

(33 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The consolidation of metallic particles [14,15,23,24] and chips [10,11] into bulk samples was reported earlier and there are also reports of the incorporation of metallic particles and hard phase particles into metal matrix composites by HPT [8,9,13,25]. Nevertheless, the present results demonstrate that it is feasible to mix magnesium chips and hard ceramic particles in order to produce bulk nano-composites by HPT.…”

Section: Discussionsupporting

confidence: 72%

“…The mixing of these phases is only achieved after additional significant straining up to 5 turns of HPT. It is important to note also that an earlier consolidation of pure magnesium particles and powders was achieved with a total shear strain of only ~42 [15] while the composite in the current investigation required a total shear strain of ~196 at the edge of the disc.…”

Section: Discussionmentioning

confidence: 63%

“…Earlier studies demonstrated that Mg powders are effectively consolidated by HPT [13][14][15] leading to the formation of Mg-MgO composites in which an oxide layer forms naturally around the Mg particles and acts as a reinforcing phase. Nevertheless, despite the very great potential for using HPT in producing Mg-based MMCs at room temperature, investigations on magnesium reinforced with higher contents of ceramic particles has remained essentially unexplored.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Development of a magnesium-alumina composite through cold consolidation of machining chips by high-pressure torsion

Castro

Pereira

Isaac

et al. 2019

Journal of Alloys and Compounds

View full text Add to dashboard Cite

High pressure torsion offers unique conditions for the consolidation of metallic particles at room temperature owing to the high hydrostatic compressive stresses combined with the high shear strain. A Mg-Al 2 O 3 composite was produced by consolidation of machining chips of pure magnesium with 10% in volume of alumina particles. The consolidation process was investigated by optical and scanning electron microscopy and X-ray microtomography. It is shown that shear deformation concentrates along thick alumina particle layers in the initial stage of deformation. A significant fraction of the hard phase particles are pushed into the outflow in quasiconstrained HPT and a homogeneous composite is achieved after significant straining. The composite exhibits a refined microstructure, a higher hardness and improved resistance against room temperature creep compared to pure magnesium.

show abstract

Section: Discussionsupporting

confidence: 72%

Section: Discussionmentioning

confidence: 63%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Development of a magnesium-alumina composite through cold consolidation of machining chips by high-pressure torsion

Castro

Pereira

Isaac

et al. 2019

Journal of Alloys and Compounds

View full text Add to dashboard Cite

show abstract

“…Panda et al 11) observed an interesting effect of the type of the original powder processed by HPT on the hydrogen storage properties of Mg. Consolidation of condensed ultrafine Mg powder particles resulted in faster absorption kinetics as compared with the HPT sample obtained from atomized micro-sized powder.…”

Section: Processing Of Mg and Mgh 2 Powders By Spd Techniquesmentioning

confidence: 99%

Hydrogen Storage in Mg and Mg-Based Alloys and Composites Processed by Severe Plastic Deformation

Leiva¹,

Jorge²,

Ishikawa³

et al. 2019

Mater. Trans.

View full text Add to dashboard Cite

Mg-based hydrides have been extensively studied in the last 20 years due to its great potential as hydrogen storage materials, especially for stationary applications. Severe plastic deformation (SPD) can be used to produce Mg-based materials for hydrogen storage applications, with good activation (first hydrogenation) and H-absorption/desorption kinetics, combined with enhanced air resistance. Both advanced (e.g. highpressure torsion, equal-channel angular pressing) and more conventional (e.g. cold rolling, cold forging) techniques were investigated as means of production of bulk samples with refined microstructures and controlled textures. Depending on the processing parameters, SPD or SPD-like techniques can produce sub-microcrystalline or even nanocrystalline structures, with a fair level of dispersion of the additives and high level of the desired [0002] fibre type texture. In this review we discuss how the processing of hydrogen storage materials by SPD techniques matches the following desirable aspects: fast kinetics (many interfaces nano-grains and additives), easy activation (clean surfaces, interfaces, and adequate texture) and thermodynamic stability (alloying; synergy between phases in composites). The results suggest new and in most cases simpler and cheaper alternatives to produce hydrogen storage materials with proper hydrogen absorption and desorption kinetics and, in the case of composites, lower hydride stability.

show abstract

“…The last decade saw a marked growth of activities in HPT processing of Mg and magnesium alloys for hydrogen storage applications, the Kyushu University group and other teams (Leiva et al, 2010;Botta et al, 2013;Panda et al, 2017) being the major drivers of this research. A report on HPT processing of Mg alloys (including hydrogen sorption results) published recently by Figueiredo and Langdon (2019) complements the review by Edalati et al (2018a).…”

Section: Alloys Processed By High Pressure Torsionmentioning

confidence: 99%

Ultrafine-Grained Magnesium Alloys for Hydrogen Storage Obtained by Severe Plastic Deformation

2019

View full text Add to dashboard Cite

Magnesium alloys take a special place among the hydrogen storage materials, mainly due to their high gravimetric (7.6 mass %) and volumetric (110 kg m −3) hydrogen storage capacity. Unfortunately, the kinetics of hydrogenation and hydrogen release are rather slow, which limits practical use of magnesium-based materials for hydrogen and heat storage. Refining the microstructure of magnesium alloys, ideally down to nanoscale, is known to accelerate the hydrogenation/dehydrogenation kinetics. A possible way to achieve that is by severe plastic deformation. Our first demonstration of this effect through processing of a Mg alloy (ZK60) by equal-channel angular pressing prompted a stream of further studies employing severe plastic deformation techniques to improve the hydrogen storage-relevant properties of Mg alloys. The present article provides an overview of the literature on the subject, with a natural focus on our own data.

show abstract

Effect of initial powder type on the hydrogen storage properties of high-pressure torsion consolidated Mg

Cited by 37 publications

References 37 publications

Development of a magnesium-alumina composite through cold consolidation of machining chips by high-pressure torsion

Development of a magnesium-alumina composite through cold consolidation of machining chips by high-pressure torsion

Hydrogen Storage in Mg and Mg-Based Alloys and Composites Processed by Severe Plastic Deformation

Ultrafine-Grained Magnesium Alloys for Hydrogen Storage Obtained by Severe Plastic Deformation

Contact Info

Product

Resources

About