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Deoxidation of Ti Melt by Newly Developed Two-Step Plasma Arc Melting Process Using Hydrogen

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Abstract

A two-step plasma arc melting process, comprising a first step under Ar-30 pct H2 gas flow and the second step under Ar gas flow, has been newly developed for the deoxidation of Ti melts. The oxygen content after this process depended on the depth probed in the Ti melt. Decrease in the oxygen content from 1.5 to 0.7 mass pct in the surface region of the Ti melt occurred in the second step.

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This study was partially supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan (No. 18K18929) and by Innovative Structural Materials Association (ISMA, Future Pioneering Projects) under Contract No. 14100139-a.

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Authors and Affiliations

  1. Department of Materials Processing, Tohoku University, Sendai, 980-8579, Japan

    Masahito Watanabe, Fumiya Sato, Raiki Abe, Kyosuke Ueda & Takayuki Narushima

  2. Materials Research Laboratory, Kobe Steel LTD, Kobe, 651-2271, Japan

    Daisuke Matsuwaka & Fumiaki Kudo

Authors
  1. Masahito Watanabe
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  2. Fumiya Sato
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  3. Raiki Abe
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  4. Kyosuke Ueda
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  5. Daisuke Matsuwaka
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  6. Fumiaki Kudo
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  7. Takayuki Narushima
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Correspondence to Takayuki Narushima.

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Manuscript submitted December 18, 2018.

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Watanabe, M., Sato, F., Abe, R. et al. Deoxidation of Ti Melt by Newly Developed Two-Step Plasma Arc Melting Process Using Hydrogen. Metall Mater Trans B 50, 1553–1558 (2019). https://doi.org/10.1007/s11663-019-01608-x

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  • DOI: https://doi.org/10.1007/s11663-019-01608-x

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