Mechanical properties of TIG and EB weld joints of F82H

Hirose, Takanori; Sakasegawa, Hideo; Nakajima, Mio; Tanigawa, Hiroyasu

doi:10.1016/j.fusengdes.2015.06.133

Cited by 7 publications

(2 citation statements)

References 9 publications

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“…1) steel defined in ASME Section VIII. As shown in figure 9 of [53], WM and BOND region (FG-HAZ) shows larger recovery of hardness compared to those of BM and OT-HAZ under a PWHT condition. It is consistent with the improvement in Charpy impact properties as shown in figure 3 of [53].…”

Section: Overview Of Rafm Steel Joining Technologiesmentioning

confidence: 89%

“…However, issues were raised about using high heat input resulting in extensive OT-HAZ [51,52]. Various PWHT ranging from 720-780 °C were conducted on narrow gap TIG and EB joints on 45-50 mm thickness plates F82H-BA07 to evaluate the effect of PWHT condition [53]. The selected PWHT conform to the conditions for Grade91 (P-No.…”

Section: Overview Of Rafm Steel Joining Technologiesmentioning

confidence: 99%

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Development of benchmark reduced activation ferritic/martensitic steels for fusion energy applications

et al. 2017

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Reduced-activation ferritic/martensitic (RAFM) steel is the benchmark structural material for in-vessel components of fusion reactor. The current status of RAFM developments and evaluations is reviewed based on two leading RAFM steels, F82H and EUROFER-97. The applicability of various joining technologies for fabrication of fusion first wall and blanket structures, such as weld or diffusion bonding, is overviewed as well. The technical challenges and potential risks of utilizing RAFM steels as the structural material of in-vessel components are discussed, and possible mitigation methodology is introduced. The discussion suggests that deuterium-tritium fusion neutron irradiation effects currently need to be treated as an ambiguity factor which could be incorporated within the safety factor. The safety factor will be defined by the engineering design criteria which are not yet developed with regard to irradiation effects and some high temperature process, and the operating time condition of the in-vessel component will be defined by the condition at which those ambiguities due to neutron irradiation become too large to be acceptable, or by the critical condition at which 14 MeV fusion neutron irradiation effects is expected to become different from fission neutron irradiation effects.

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Section: Overview Of Rafm Steel Joining Technologiesmentioning

confidence: 89%