Influence of microstructure on high-cycle fatigue behavior of austempered ductile cast iron

作者: Leslie Bartosiewicz , A.R. Krause , F.A. Alberts , Iqbal Singh , Susil K. Putatunda

DOI: 10.1016/1044-5803(93)90069-8

关键词: Cast ironAustemperingFracture mechanicsFatigue limitStress concentrationMicrovoid coalescenceParis' lawMetallurgyAusteniteMaterials science

摘要: Abstract An investigation was carried out to examine the influence of austempering heat treatments and resultant microstructure austempered ductile cast iron, on fatigue crack growth rate, threshold, high-cycle strength material. Two different approaches were used study behavior this relatively new material, that is, a traditional S-N curve approach for determination fracture mechanics-based threshold. Compact tension cylindrical specimens prepared from alloyed nodular iron given three produce microstructures. The threshold these studied in room temperature ambient atmosphere. results present demonstrate material increases with increase volume fraction carbon-saturated austenite. other hand, found decrease austenitic grain size. process combination striations microvoid coalescence, propagation by connecting graphite nodules along its path.

参考文章(22)
P. Paris, F. Erdogan, A Critical Analysis of Crack Propagation Laws Journal of Basic Engineering. ,vol. 85, pp. 528- 533 ,(1963) , 10.1115/1.3656900
S. Suresh, R. O. Ritchie, Propagation of short fatigue cracks International Materials Reviews. ,vol. 29, pp. 445- 475 ,(1984) , 10.1179/IMTR.1984.29.1.445
R.J Cooke, P.E Irving, G.S Booth, C.J Beevers, The slow fatigue crack growth and threshold behaviour of a medium carbon alloy steel in air and vacuum Engineering Fracture Mechanics. ,vol. 7, pp. 69- 77 ,(1975) , 10.1016/0013-7944(75)90067-3
R.J. Cooke, C.J. Beevers, Slow fatigue crack propagation in pearlitic steels Materials Science and Engineering. ,vol. 13, pp. 201- 210 ,(1974) , 10.1016/0025-5416(74)90191-8
G. Clark, J. F. Knott, Effects of notches and surface hardening on the early growth of fatigue cracks Metal science. ,vol. 11, pp. 345- 350 ,(1977) , 10.1179/MSC.1977.11.8-9.345
K. R. Dowse, C. E. Richards, FATIGUE CRACK PROPAGATION THROUGH WELD HEAT AFFECTED ZONES Metallurgical Transactions. ,vol. 2, pp. 599- 603 ,(1971) , 10.1007/BF02663355
R. O. Ritchie, Near-Threshold Fatigue Crack Propagation in Ultra-High Strength Steel: Influence of Load Ratio and Cyclic Strength Journal of Engineering Materials and Technology. ,vol. 99, pp. 195- 204 ,(1977) , 10.1115/1.3443519
P. K. Liaw, W. A. Logsdon, The influence of load ratio and temperature on the near-threshold fatigue crack growth rate properties of pressure vessel steels. Journal of Engineering Materials and Technology-transactions of The Asme. ,vol. 107, pp. 26- 33 ,(1985) , 10.1115/1.3225767
S. K. Putatunda, Fracture toughness and fatigue crack growth rate Transactions of The Indian Institute of Metals. ,vol. 40, pp. 34- 38 ,(1987)