On Creep Rupture Characteristics in STS304 Stainless Steels


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In this study, the creep rupture tests of STS304 stainless steels were investigated at three different elevated temperatures of 600, 650 and 700 under the constant creep stresses. Creep rupture characteristics such as creep stress, creep rupture time, steady state creep rate and so on were evaluated. The behaviors of creep rate curve and initial strain are compared at three different elevated temperatures. The stress exponent (n) at 600, 650 and 700 based on steady state creep rate showed 22.5, 20.6 and 11.4 respectively. By increasing the temperature, the stress exponent is decreased. At the temperature of 700, the lowest stress exponents are shown and this behavior is also observed in the case of stress exponent based on rupture time. The creep life prediction by LMP method is presented and the equation of this result is as follows: T(logtr+20)=-0.005152-14.56+24126.



Key Engineering Materials (Volumes 326-328)

Edited by:

Soon-Bok Lee and Yun-Jae Kim






S. J. Kim et al., "On Creep Rupture Characteristics in STS304 Stainless Steels", Key Engineering Materials, Vols. 326-328, pp. 1309-1312, 2006

Online since:

December 2006




[1] B.J. Cane and P. F. Aplin: Proc. of the Pressure Vessels and Piping Conference (1993), pp.25-29.

[2] W.G. Kim, S.H. Kim and W.S. Ryu: KSME Int. J., Vol. 15, No. 11 (2001), pp.1463-1471.

[3] Y.S. Kong, H.K. Yoon and S.K. Oh: KSME Int. J., Vol. 17, No. 4 (2003), pp.469-476.

[4] S.K. Oh: Int. J. of Ocean Engineering and Technology, Vol. 1, No. 1, (1998) pp.78-86.

[5] ASTM E139: Standard Test Methods for Creep-Rupture Tests of Metallic Materials (2003), pp.1-12.

[6] D.Y. Lyu, S.S. Baek and H.S. Yu: Transaction of the KJMR, Vol. 13, No. 7, (2003), pp.429-435.

[7] F.H. Norton: McGraw Bill, New York (1910) p.67.

[8] F.R. Larson and J. Miller: Transaction of the ASME (1952), pp.765-775.

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