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| EFFECTS OF OVERLOADING ON CORROSION FATIGUE CRACK GROWTH FOR ULTRA-HIGH STRENGTH STEEL-Ⅱ.EXPERIMENTAL VERIFICATION AND ANALYSIS |
| Lu Minxu; Zheng Xiulin(Northwestern Polytechnical University) |
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Abstract Experimental studies were conducted on the effects of single and periodic overloading oh corrosion fatigue crack growth (CFCG) in the two commonly used environments, air and 3.5% NaCl neutral solution,for GC-4 (40CrMnSiMoVA) steel. Test results show that the whole process of the effect of overloading on CFCG involves three phases in time sequence: the fast tearing, the retardation, and the recovery. For periodic overloading tests, if the crack length, ad, grown during the interval of two overloading cycles were far smaller than the difference between the overloading plastic region size, rpOL, and the constant plastic region size rpCLA, i.e. ad <
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Received: 25 June 1994
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| 1路民旭,郑修麟．中国腐蚀与防护学报,1994,14(2)2路民旭,刘晓坤,王建军,郑修麟．航空学报,1990,11(12):B617-B6213王建军．刘晓坤,路民旭．航空学报,1988,9(13):S140-S1434ZuidemaJ;MensePJM,EdwardsAH．Engng．Fract．Mech,1987,26(6):927-9355韩光伟,宁余九．中国腐蚀与防护学报,1991,11(4):297-3086NadasaK,TakaiH,KidoM．Eng．Fract．Mech,1977;9(5):867-8777RobinD,LouahM,PluviapeG．Fat．Engng．Mater．Struct．;1983,6(1):1-138臧启山,刘慷,柯伟,郑宇礼．中国腐蚀与防护学报,1989,9(3):169-1749钱友荣,何向东．金属学报,1989,25(6):A444-A44710NibberingJJW．CorrosSci．．1983,23(6):645-662 |
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