Improvement of hydrogen storage properties of magnesium alloys by cold rolling and forging

6th International Conference on Nanomaterials by Severe Plastic Deformation

材料科学;化学

Huot, Jacques^1 ; Amira, Sofiene^1 ; Lang, Julien^1 ; Skryabina, Nataliya^2 ; Fruchart, Daniel^3

Hydrogen Research Institute, Université du Québec Á Trois-Riviéres, 3351 des Forges, Trois-Riviéres, QC, Canada^1

Perm State University, Department of Physics and Chemistry, 15 Bukireva st., 614990 Perm, Russia^2

Institut Néel, CRETA-CNRS, BP 166, 38042 Grenoble Cedex 9, France^3

关键词: Activation kinetics;    AZ91 alloy;    AZ91D alloy;    Creep-resistant magnesium alloys;    Hydrogen sorption;    Hydrogen storage properties;    MRI-153;    Pure magnesium;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/63/1/012114/pdf
DOI  :  10.1088/1757-899X/63/1/012114

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In this talk we show that cold rolling (CR) could be used to enhance hydrogen sorption properties of magnesium and magnesium alloys. In particular, cold rolling could reduce the first hydrogenation time, the so-called activation. Pure magnesium, commercial AZ91D alloy, and an experimental creep resistant magnesium alloy MRI153 in the as-cast and die-cast states were investigated. We found that both MRI and AZ91 alloys present faster activation kinetic than pure magnesium. This could be explained by the texture, higher number of defects, and nanostructure in CR materials but also precipitates at the grain boundaries. The effect of filing was also investigated.