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FATIGUE/CREEP INTERACTION FRACTURE MAP AT VARIOUS TEMPERATURES |
ZHANG Hongxue;XU Zhichao;CHEN Gaoliang Beijing University of Iron and Steel Technology |
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Cite this article:
ZHANG Hongxue;XU Zhichao;CHEN Gaoliang Beijing University of Iron and Steel Technology. FATIGUE/CREEP INTERACTION FRACTURE MAP AT VARIOUS TEMPERATURES. Acta Metall Sin, 1988, 24(6): 439-442.
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Abstract The relative ratio of fatigue resistance to creep resistance of materialsvaries with test temperature. As the temperature decreases, the creep resistance,since it is a thermal activation process, becomes relatively larger than fatigueresistance. The fatigue damage therefore becomes predominant, and results inexpansion of fatigue fracture region (F region) and shrinkage even complete elimina-tion of creep fracture region (C region). This phenomenon could be understood onthe basis of the integrated model of competitive and eumulative models of fatigue/creep interaction. A material parameters, Ω, can be used to estimate the temperatureat which the creep fracture region is completely depressed.
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Received: 18 June 1988
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1 何庆复.北京钢铁学院博士论文,1985 2 Chen G L, He Q F, Gao L, Zhang S H. In: Solomon H D, Halford G R, Kaisand L R, Leis B N eds., Low Cycle Fatigue, Philadelphia: ASTM, 1988: 531 3 陈国良,航空材料(专刊),1983;3(1) :47 4 陈国良,何庆复,高良,章守华,常逢元,赵亚才.北京钢铁学院学报,1986;(2) :41 5 Klesuil M, Lukas R. Fatigue of Metallic Materials, Amsterdam: Elserier Scientific Publishing Company, 1980: 133z |
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