論文

査読有り
2022年5月

Effect of stacking fault energy on irradiation damage in reduced activation high entropy alloys

Journal of Nuclear Materials
  • N. Hashimoto
  • ,
  • E. Wada
  • ,
  • H. Oka

566
記述言語
掲載種別
研究論文(学術雑誌)
DOI
10.1016/j.jnucmat.2022.153767

In order to investigate the effect of stacking fault energy on microstructural evolution in reduced activation high entropy alloys, electron and/or Au+ ion irradiation was performed to the Co-free FCC-type FeCr0.8NixMny (x, y = 1, 1.3, 1.5) alloys. TEM observation of the 5%-deformed FeCr0.8NixMny alloys revealed the increase in the stacking fault energy with increasing both Ni and Mn concentration. In addition, FeCr0.8Ni1.5Mn1.5 had the highest stacking fault energy, which was much higher value than that of 316SS. Furthermore, the yield strength and the elongation of deformed FeCr0.8NixMny also showed the Ni and Mn concentration dependence. The electron irradiation at 400 °C resulted in the formation of black dots, self-interstitial atom faulted loops, but no observable voids in all the FeCr0.8NixMny alloys. The comparison of microstructural evolution revealed less faulted loop formation and growth in FeCr0.8Ni1.3Mn1.3 and FeCr0.8Ni1.5Mn1.5 alloys. From these results, it is suggested that FeCrNiMn-based high entropy alloys would be developed as high irradiation resistant materials by controlling the stacking fault energy with optimized element concentration.

リンク情報
DOI
https://doi.org/10.1016/j.jnucmat.2022.153767
Scopus
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85130161283&origin=inward
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ID情報
  • DOI : 10.1016/j.jnucmat.2022.153767
  • ISSN : 0022-3115
  • ORCIDのPut Code : 112575022
  • SCOPUS ID : 85130161283

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