2026-03-12T17:17:43Z https://repo.qst.go.jp/oai

oai:repo.qst.go.jp:00080112 2023-05-15T20:47:27Z 1

Evaluation of fatigue properties of reduced activation ferritic/martensitic steel, F82H for development of design criteria Hirose, Takanori 924830 Kato, Taichiro 924831 Sakasegawa, Hideo 924832 Tanigawa, Hiroyasu 924833 Nozawa, Takashi 924834 Takanori, Hirose 924835 Taichiro, Kato 924836 Hideo, Sakasegawa 924837 Hiroyasu, Tanigawa 924838 Takashi, Nozawa 924839 Reduced activation ferritic/martensitic (RAFM) steels are promising candidate for structural material of tritium breeding blanket in a fusion reactor. Database accumulation and definition of design criteria for RAFM have been intensively studied together with the progress of blanket design activities. As a part of database accumulation for fusion blanket, a RAFM steel, F82H was fatigue-tested at 573 and 673 K in the air. Axial strain-controlled fatigue tests were carried out with a cylindrical specimen with 8 mm of diameter with -1 of strain ratio condition in accordance with Japanese Industrial Standard, JIS Z 2279, “Method of high-temperature low cycle fatigue testing for metallic materials.” For high cycle tests, the maximum test cycles exceeded 10^6 cycles. Fatigue lifetime of F82H at temperatures ranging from room temperature to 673 K fell into the factor of 2 of the empirical fitting curve for 673 K. It was studied using experimental results that fatigue-related design limit based on RCC-MRx, such as fatigue design curves, half-life cyclic curves, and related coefficients. journal article 2020-06 Fusion Engineering and Design 160 11823 0920-3796 https://repo.qst.go.jp/records/80112 eng 10.1016/j.fusengdes.2020.111823 https://www.sciencedirect.com/science/article/pii/S0920379620303719 metadata only access