Microstructure and hydrogen storage properties of V40Ti20Cr32Fe8 alloy by heat treatment

DOI

10.2991/imst-16.2016.55How to use a DOI?

Keywords

Ti-V-Cr-Fe alloys, hydrogen storage, thermal stability.

Abstract

The microstructure, crystal structure, hydrogen storage properties and thermal stabilities of as-cast and annealed V40Ti20Cr32Fe8 alloy prepared by arc-melting were studied in this work. It was confirmed that both as-cast and annealed (973 K/72 hrs) V40Ti20Cr32Fe8 alloys are body-centered cubic (bcc) main phase and C14-typed Laves secondary (Cr2Ti). Experimetnal results show that the maximum hydrogen absorption capacities of as-cast V40Ti20Cr32Fe8 alloy at 303 K, 333 K and 363 K are about 2.25 wt.%, 1.75 wt.% and 1.12 wt.%, while that of the annealed alloy at 303 K, 333 K and 363 K are about 2.26 wt.%, 1.76 wt.% and 1.26 wt.%, respectively. The maximum hydrogen desorption capacities of as-cast V40Ti20Cr32Fe8 alloy at 303 K, 333 K and 363 K are about 1.15 wt.%, 0.89 wt.% and 0.60 wt.%, while that of the annealed alloy at 303 K, 333 K and 363 K are about 1.22 wt.%, 0.90 wt.% and 0.61 wt.%, respectively. It is indicated that hydrogen absorption/desorption kinetics of the V-Ti-Cr-Fe alloy is greatly improved by heat treatment.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Maohua Rong
AU  - Gang Fu
AU  - Feng Wang
AU  - Jiang Wang
AU  - Zhongmin Wang
AU  - Guanghui Rao
AU  - Huaiying Zhou
PY  - 2016/11
DA  - 2016/11
TI  - Microstructure and hydrogen storage properties of V40Ti20Cr32Fe8 alloy by heat treatment
BT  - Proceedings of the 2016 International Conference on Innovative Material Science and Technology (IMST 2016)
PB  - Atlantis Press
SP  - 372
EP  - 377
SN  - 1951-6851
UR  - https://doi.org/10.2991/imst-16.2016.55
DO  - 10.2991/imst-16.2016.55
ID  - Rong2016/11
ER  -