Development and Manufacture of Innovative Toughened Fine-Grained Recrystallized Tungsten Alloy

Development and Manufacture of Innovative Toughened Fine-Grained Recrystallized Tungsten Alloy

Koichi Niikura, Shunsuke Makimura, Hiroaki Kurshita, Hun-Chea Jung, Yasuhiro Matsumoto, Masashi Inotsume, Masahiro Onoi

Abstract. Tungsten (W) exhibits excellent thermal properties such as the highest melting point among the metallic elements, however, its engineering usefulness is limited due to the recrystallization embrittlement. Aiming at solving the recrystallization embrittlement, TFGR (Toughened Fine-Grained Recrystallized) W-1.1% TiC that exhibits high bending strength of 3.2~4.4 GPa and appreciable bend ductility at room temperature was developed. In collaboration with KEK, Sunric Co., Ltd., and Metal Technology Co. Ltd. (MTC) is upgrading the development phase for the engineering applicability of TFGR W-1.1TiC to increase the scale of manufacturing, to achieve mass production, and improve heat resistance and toughness. Reduction of gas-impurities such as oxygen and nitrogen is one of the essential factors in the manufacturing process. In this presentation, a fundamental study to understand outgassing behavior inside the HIP capsule will be introduced.

Keywords
Tungsten, Recrystallization Embrittlement, Irradiation Embrittlement

Published online 12/8/2023, 6 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: Koichi Niikura, Shunsuke Makimura, Hiroaki Kurshita, Hun-Chea Jung, Yasuhiro Matsumoto, Masashi Inotsume, Masahiro Onoi, Development and Manufacture of Innovative Toughened Fine-Grained Recrystallized Tungsten Alloy, Materials Research Proceedings, Vol. 38, pp 85-90, 2023

DOI: https://doi.org/10.21741/9781644902837-13

The article was published as article 13 of the book Hot Isostatic Pressing

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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