The effect of tempering temperatures on the surface swelling of helium-ion-implanted Ti/Ta-added reduced-activation ferritic/martensitic steel
- Authors
- Kim, Sangeun; Heo, Jungwoo; Kim, Hyeongchul; Jin, Hyung-Ha; Moon, Joonoh; Lee, Chang-Hoon; Cho, Seong-Yong; Shin, Chansun
- Issue Date
- May-2020
- Publisher
- Elsevier BV
- Keywords
- He bubble formation; He ion irradiation; RAFM steel; Swelling
- Citation
- Fusion Engineering and Design, v.154, pp 1 - 9
- Pages
- 9
- Indexed
- SCIE
SCOPUS
- Journal Title
- Fusion Engineering and Design
- Volume
- 154
- Start Page
- 1
- End Page
- 9
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/113723
- DOI
- 10.1016/j.fusengdes.2020.111509
- ISSN
- 0920-3796
1873-7196
- Abstract
- The swelling of a newly developed Ti/Ta-added reduced-activation ferritic/martensitic (RAFM) steel is evaluated using helium ion implantation. He ions are injected into sample surfaces covered with a transmission electron microscopy (TEM) grid; subsequent post-implantation annealing (PIA) causes surface mounds to form where He ions are injected. The heights of surface mounds on Ti/Ta-RAFM steels tempered at three different temperatures are found to increase with increasing tempering temperature. TEM observation reveals that helium bubbles formed along lath/block boundaries, dislocations, and precipitate-matrix interfaces. The increased step height of the Ti/Ta-RAFM steel tempered at higher temperature can be attributed to increases in the block and precipitate sizes and a decrease in dislocation density. The mechanism of helium bubble evolution in RAFM steel after helium implantation at room temperature and subsequent PIA is illustrated schematically. The swelling of Ti/Ta-RAFM steel is compared to that of a reference steel with a composition similar to that of Eurofer97. © 2020 Elsevier B.V.
- Files in This Item
-
Go to Link
- Appears in
Collections - COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY > DEPARTMENT OF PHOTONICS AND NANOELECTRONICS > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.