Plasma and Fusion Research

Volume 18, 1205017 (2023)

Rapid Communications

A Study on Laser Processing of Tungsten-Rhenium Alloys for Divertor Development
Haotian YANG1), Ryo YASUHARA1,2), Hiroyuki NOTO1,2), Chihiro SUZUKI1,2), Reina MIYAGAWA3) and Hiyori UEHARA1,2)
1)
The Graduate University for Advanced Studies, SOKENDAI, 322-6 Oroshi-cho, Toki, Gifu 509-5292, Japan
2)
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki, Gifu 509-5292, Japan
3)
Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Aichi 466-8555, Japan
(Received 20 December 2022 / Accepted 12 February 2023 / Published 17 March 2023)

Abstract

Tungsten-rhenium alloys are more attractive due to their excellent characteristics, such as high ductility and improved mechanical properties. They can be expected to become some of the candidate materials for the next-generation of nuclear fusion reactors. We have successfully achieved crack-free laser processing in high-doped tungsten-rhenium alloys using a nanosecond Q-switched Nd:YAG laser system. In addition, the connection between the number of cracks and grain size on different rhenium doping concentrations is also characterized.

Keywords

laser processing, crack-free, surface treatment, tungsten-rhenium alloy, divertor, fusion science

DOI: 10.1585/pfr.18.1205017

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