Acta Metallurgica Sinica (English Letters) ›› 1993, Vol. 6 ›› Issue (5): 316-319.

• Research paper • Previous Articles     Next Articles

FATIGUE BEHAVIOUR OF M/B DUPLEX STRUCTURE IN A HIGH CARBON Cr-Mo-W STEEL

TIAN Baohong ZHENG Shi'an WU Lei Luoyang Institute of Technology,Luoyang,China ZHENG Shi'an,associate professor,Department of Materials Engineering,Luoyang Institute of Technology,Luoyang 471039,China   

  • Received:1993-10-25 Revised:1993-10-25 Online:1993-10-25 Published:2009-10-10

Abstract: Determination was carried out of fatigue crack propagation rate of steel 65Cr5Mo3W2VSiTi (LM2)with various bainite contents and M/B duplex structure tempered at various tempera- tures.The threshold value of fatigue for each processing was estimated by experimental data. The mechanism for fatigue crack propagation of M/B duplex structure in steel LM2 seems to be non-continuous.The calculated fatigue crack micro-propagation rates are found to agree with the experimental data.

Key words: duplex structure, fatigue crack propagation rate, threshold value, steel 65Cr5Mo3W2VSiTi