@article{oai:repo.qst.go.jp:00049250,
 author = {廣瀬, 貴規 and 酒瀬川, 英雄 and 中島, 基樹 and 加藤, 太一朗 and 宮澤, 健 and 谷川, 博康 and Hirose, Takanori and Sakasegawa, Hideo and Nakajima, Motoki and Kato, Taichiro and Miyazawa, Takeshi and Tanigawa, Hiroyasu},
 journal = {Fusion Engineering and Design},
 month = {Nov},
 note = {Reduced activation ferritic/martensitic (RAFM) steels are assumed as structural material of blanket design activities. Determining the design limit is essential for the RAFM steels to qualify their use in fusion blankets. This work investigates fatigue properties of a RAFM steel, F82H at elevated temperature up to 823 K in the air and vacuum condition. The tests were carried out with axial strain controlled condition using cylindrical specimen, and the results were summarized using the Manson’s modified universal slope method, which can describe fatigue lifetime as a function of tensile properties. Although fatigue lifetime of F82H decreased with temperature, the fatigue lifetime up to 723 K fell into factor of 2 of the lifetime at ambient temperature. The lifetime at vacuum condition was successfully described using universal slope method. On the other hand, the lifetime in the air was 1/3 or shorter than that in vacuum condition. It is notable that a heat of F82H prepared for IEA round robin tests demonstrated 1/5 of shorter lifetime than latest F82H. The difference is discussed with inclusion morphologies affected by steel manufacturing process and so on. This report has been prepared as an account of work assigned to the Japanese Implementing Agency within the ‘‘Broader Approach Agreement’’ between the Government of Japan and the European Atomic Energy Community.},
 pages = {1073--1076},
 title = {Effects of test environment on high temperature fatigue properties of reduced activation ferritic/martensitic steel, F82H},
 volume = {136},
 year = {2018}
}