An Experimental Study on Creep Behaviour of 2Cr11NiMoVNbNB Steel

Abstract:

Article Preview

The creep experiments of 2Cr11NiMoVNbNB steel were carried out at 550oC and 600oC. The creep damage laws of this material are discussed. An increase of the stress exponent with decreasing temperature was found experimentally and a modified secondary creep rate equation including in creep threshold stress was derived. Creep damage analyses are made under constant stress and under relaxed stress with creep threshold stress. The experimental results show that the damage value calculated with creep time is almost equal to that calculated with the creep rate, and an iteration method of calculating is proposed.

Info:

Periodical:

Key Engineering Materials (Volumes 306-308)

Edited by:

Ichsan Setya Putra and Djoko Suharto

Pages:

1031-1036

DOI:

10.4028/www.scientific.net/KEM.306-308.1031

Citation:

Z. D. Liu and X. P. Mao, "An Experimental Study on Creep Behaviour of 2Cr11NiMoVNbNB Steel", Key Engineering Materials, Vols. 306-308, pp. 1031-1036, 2006

Online since:

March 2006

Export:

Price:

$35.00

[1] R. Kaibyshev and I. Kazalukov, Key Engineering Materials. 171-174 (2000), pp.213-218.

[2] J. Lemaitre, A Course On Damage Mechanics (In Chinese). Science Press (1996), Beijing.

[3] Wu Hongyao, Damage Mechanics, National Defence Industry Press (1990), Beijing.

[4] Jin Yao, Journal of Mechanical Strength. (In Chinese), 23(2001), pp.206-208. Fig. 8 The predicting total life vs. fastening interval Fig. 7 Accumulative creep damage vs. fastening numbers at different fastening durations (a) 300MPa (b) 350MPa.

In order to see related information, you need to Login.