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Title: 9Crフェライト系耐熱鋼のΩ法解析とクリープ強化機構のΩ値への影響
Other Titles: Creep Curve Analysis Ω with Method and Effect of Creep Strengthening Mechanism on Ω Value in 9Cr Ferritic Heat-resistant Steels
Authors: 光原, 昌寿1 Browse this author
寺田, 大将2 Browse this author
池田, 賢一3 Browse this author →KAKEN DB
中島, 英治4 Browse this author
Authors(alt): Mitsuhara, Masatoshi1
Terada, Daisuke2
Ikeda, Ken-ichi3
Nakashima, Hideharu4
Keywords: Ω method
creep deformation
life assessment
ferritic heat-resistant steel
creep strengthening mechanism
Issue Date: 1-Mar-2008
Publisher: 日本鉄鋼協会
Journal Title: 鉄と鋼
Volume: 94
Issue: 3
Start Page: 99
End Page: 105
Publisher DOI: 10.2355/tetsutohagane.94.99
Abstract: Ω method is effective for an assessment of creep life time. In this study, creep curves of 9Cr ferritic heat-resistant steels were analyzed by the Ω method. Samples were four types of 9Cr steel, which were fundamental 9Cr steel, solid solution hardened steel containing W, precipitation hardened steel with MX and precipitation hardened steel with MX and Laves phase. The comparison between rupture time in creep tests and creep life time assessed by the Ω method indicated that the life assessment of the Ω method was sufficiently effective in the 9Cr steels. In addition, we investigated the dependence of Ω value on stress applied in creep test. In the case of the precipitation hardened steels, Ω value had the strong dependence on stress. This dependence indicated that Ω value has relevance to creep deformation mechanism.
Rights: 著作権は日本鉄鋼協会にある
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 池田 賢一

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