Acta Metall Sin  1994, Vol. 30 Issue (10): 469-476    DOI:

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IN SITU OBSERVATION ON LOW CYCLIC FATIGUE IN TRIPHASE STEEL UNDER SEM

HU Zhizhong; MA Mingriang; LIU Yanqing; LIU Jinghua (Xi′an Jiaotong University)(Manuscript received 22 December; 1993; in revised form 1 June; 1994)

HU Zhizhong; MA Mingriang; LIU Yanqing; LIU Jinghua (Xi′an Jiaotong University)(Manuscript received 22 December; 1993; in revised form 1 June; 1994). IN SITU OBSERVATION ON LOW CYCLIC FATIGUE IN TRIPHASE STEEL UNDER SEM. Acta Metall Sin, 1994, 30(10): 469-476.

Abstract References Related Articles Recommended Metrics Download:  PDF(695KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The behaviour of austenite in the crack initiation and propagation of low cyclic fatigue for triphase steel (F-M-A) was observed in situ under SEM with fatigue loading stage. Results showed that the austenite in triphase steel during the crack initiation and early propasation of low cyclic fatigue may decrease the fatigue notch sensitivity and prolong the cyclic number of fatigue crack initiation, so as to flex the propagation path and to reduce the propagation rate of the cracks. At high strain fatigue stage, the strain-induced transformation of austenite may form the martensite, of which has the boundaries of low energy path for cracks propagation, the cracks may propagate more rapidly. Furthermore, an energy criterion was proposed, i, e., when the propagation work at crack tip is less than energy transformed from austenite into martensite, the fatigue resistance of steel may be improved by austenite, on the contrary, the crack initiation and propagation accelerated.Correspondent: HU Zhichong, senior engineer, Department of Materials Science and Engineering, Xi′an Jiaotong University, Xi′an 710049 Key words:  triphase steel      low cyclic fatigue fracture      strain-induced transformation      fatigue crack propagation      in situ observation      Received:  18 October 1994      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1994/V30/I10/469 1MocarskiS．MetalProgress,1970,98(3):962高惠临,谈育煦,王笑天．金属学报,1988;24:A173刘静华,刘彦庆,马新沛,孙颖．中国机械工程学会热处理学会第五届年会论文集,1981:114刘静华,刘彦庆,柴东朗．陕西冶金,1991;2:185马明亮．西安交通大学硕士论文,1991 [1] JIANG He, NAI Qiliang, XU Chao, ZHAO Xiao, YAO Zhihao, DONG Jianxin. 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HIGH SPEED AND HIGH MAGNIFICATION IN SITU OBSERVATION OF RESIDUAL LIQUID METAL DURING LASER WELDING PROCESS[J]. 金属学报, 2011, 47(3): 305-310. [6] ZHANG Sa; CHENG Xuan; ZHANG Ying. In Situ Raman Spectroscopy Observation for Domain Switching of Ferroelectric Ceramics[J]. 金属学报, 2005, 41(6): 663-668 . [7] FENG Zhongxin; ZHANG Jianzhong; YANG Jianjun; CHEN Xinzeng 1）Xi'an Jiaotong University; Xi'an 710049 2) Ningbo College; Ningbo 315010(Manuscript received 1 995-06-23; in revised form 1 995-09- 1 8). EFFECT OF PLASTIC DEFORMATION PROPAGATION ON FATIGUE BEHAVIOUR OF METALS UNDER CYCLIC LOADING[J]. 金属学报, 1996, 32(3): 261-264. [8] HUA Wenjun(Beijing Institute of Aeronautical Materials; Beijing 100095); WANG Zhirui; ZHANG Jirong( University of Toronto; Canada)(Manuscript received 1 995-06-09; in revised form 1995-1 0-02). RELATIONSHIP BETWEEN MICROSTRUCTURE AND FATIGUE CRACK PROPAGATION BEHAVIOUR IN TiB_2 PARTICULATE REINFORCED ZA-8 Zn ALLOY[J]. 金属学报, 1996, 32(3): 254-260. 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[12] CHEN QiZhi;CHU Wuyang;QIAO Lijie;WANG Yanbin;XIAO Jimei(University of Science and Technology Beijing)(Manuscript received 22 December;1993). TEM IN SITU OBSERVATION OF BRITTLE CRACKING OF HYDROGEN CHARGED 310 STAINLESS STEEL UNDER TENSION[J]. 金属学报, 1994, 30(6): 248-256. [13] TIAN Baohong;ZHENG Shi'an;WU Lei Luoyang Institute of Technology associate professor;Department of Materials Engineering;Luoyang Institute of Technology; Luoyang 471039. FATIGUE BEHAVIOUR OF M/B DUPLEX STRUCTURE IN A HIGH CARBON Cr-Mo-W STEEL[J]. 金属学报, 1993, 29(3): 46-50. [14] LIU Jianhong; HE Shiyu; YAO Mei (Harbin Institute of Technology). IN SITU OBSERVATION OF THERMAL FATIGUE CRACK GROWTH IN 3Cr2W8V STEEL[J]. 金属学报, 1992, 28(12): 15-17. [15] LI Yongjun Xi'an Jiaotong University. FATIGUE FRACTURE BEHAVIOUR OF LOWCARBON MARTENSITE AND MARTENSITE/ BAINITE DUPLEX STRUCTURE IN 20CrMnMo STEEL[J]. 金属学报, 1991, 27(6): 70-75. No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed