INVESTIGATION OF THE LOW-CYCLE FATIGUE AND FATIGUE CRACK GROWTH BEHAVIORS OF P91 BASE METAL AND WELD JOINTS

Low cycle fatigue tests and crack growth propagations tests on P91 pipe base metal and its weld joints were conducted at three different temperatures: room temperature,550℃ and 575℃. The strain-life was analyzed, and the changes in fatigue life behavior and fatigue growth rates with increasing temperature were discussed. The different properties of the base metal and its weld joint have been analyzed.

作 者： H.C.Yang Y.Tu M.M.Yu J.Zhao   作者單位： H.C.Yang,Y.Tu,M.M.Yu(Dongfang Boiler (Group) Ltd, Zigong 643001, China)

J.Zhao(Department of Materials Engineering, Dalian University of Technology, Dalian 116023, China) 

刊 名： 金屬學報(英文版)  ISTIC EI 英文刊名： ACTA METALLURGICA SINICA(ENGLISH LETTERS)  年，卷(期)： 2004 17(4)  分類號：   關鍵詞： P91 pipe   low-cycle fatigue   fatigue crack growth  

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