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Hydrogenation behaviors and characteristics of bulk Ti–6Al–4V alloy at different isothermal temperatures

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Abstract

The bulk Ti–6Al–4V alloy was hydrogenated at the temperature range of 723–973 K, and the hydrogen absorption characteristics and hydrogen absorption kinetics were investigated. The results show that there are two types of hydrogen absorption characteristics at different temperatures. The hydrogen content decreases, and the time reaching reaction equilibrium is shorten with the isothermal hydrogenation temperature increasing. Meanwhile, the mechanism of the hydrogen absorption kinetics is different at different temperatures. The incubation period exists at the initial hydrogen absorption stage below 823 K, and Ka2 (the reaction rate constant of Stage 2) ≫ Ka1 (the reaction rate constant of Stage 1). And there is no incubation period over 823 K, Ka1 ≫ Ka2.

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Acknowledgements

This work was financially supported by Sichuan Province Science and Technology Project (No. 2013VTZC04).

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Authors and Affiliations

  1. School of Aeronautics and Astronautics, Sichuan University, Chengdu, 610065, China

    Long Pan & Yun-Gui Chen

  2. College of Materials Science and Engineering, Sichuan University, Chengdu, 610065, China

    Chun-Ming Wang, Su-Fen Xiao & Yun-Gui Chen

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  1. Long Pan
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Correspondence to Yun-Gui Chen.

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Pan, L., Wang, CM., Xiao, SF. et al. Hydrogenation behaviors and characteristics of bulk Ti–6Al–4V alloy at different isothermal temperatures. Rare Met. 38, 1131–1135 (2019). https://doi.org/10.1007/s12598-016-0852-y

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  • DOI: https://doi.org/10.1007/s12598-016-0852-y

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