The Effect of Nitrogen Alloying on the Low Cycle Fatigue and Creep-Fatigue Interaction Behavior of 316LN Stainless Steel

G.V. Prasad Reddy; R. Sandhya; M.D. Mathew; S. Sankaran

doi:10.4028/www.scientific.net/AMR.794.441

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 794The Effect of Nitrogen Alloying on the Low Cycle...

The Effect of Nitrogen Alloying on the Low Cycle Fatigue and Creep-Fatigue Interaction Behavior of 316LN Stainless Steel

Abstract:

Low cycle fatigue (LCF) and Creep-fatigue interaction (CFI) behavior of 316LN austenitic stainless steel alloyed with 0.07, 0.11, 0.14, .22 wt.% nitrogen is briefly discussed in this paper. The strain-life fatigue behavior of these steels is found to be dictated by not only cyclic plasticity but also by dynamic strain aging (DSA) and secondary cyclic hardening (SCH). The influence of the above phenomenon on cyclic stress response and fatigue life is evaluated in the present study. The above mentioned steels exhibited both single-and dual-slope strain-life fatigue behavior depending on the test temperatures. Concomitant dislocation substructural evolution has revealed transition in substructures from planar to cell structures justifying the change in slope. The beneficial effect of nitrogen on LCF life is observed to be maximum for 316LN with nitrogen in the range 0.11 - 0.14 wt.%, for the tests conducted over a range of temperatures (773-873 K) and at ±0.4 and 0.6 % strain amplitudes at a strain rate of 3*10^-3 s^-1. A decrease in the applied strain rate from 3*10^-3 s^-1 to 3*10^-5 s^-1 or increase in the test temperature from 773 to 873 K led to a peak in the LCF life at a nitrogen content of 0.07 wt.%. Similar results are obtained in CFI tests conducted with tensile hold periods of 13 and 30 minutes. Fractography studies of low strain rate and hold time tested specimens revealed extensive intergranular cracking.

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Periodical:

Advanced Materials Research (Volume 794)

Pages:

441-448

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.794.441

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Online since:

September 2013

Authors:

G.V. Prasad Reddy, R. Sandhya, M.D. Mathew, S. Sankaran

Keywords:

316LN Stainless Steel, Creep-Fatigue Interaction, Low Cycle Fatigue, Nitrogen

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References

[1] J.O. Nilsson, Influence of nitrogen on high temperature LCF behavior of Austenitic stainless steels, Fatigue Engng. Mater. Struct. 7(1), (1984) 55-64.

Google Scholar

[2] S. Degallaix, J. Foct, A. Hendry, Mechanical behavior of high-nitrogen stainless steels, Mater. Sci. and Tech. 2 (1986) 946-950.

DOI: 10.1179/mst.1986.2.9.946

Google Scholar

[3] S. Degallaix, G. Degallaix, J. Foct, Influence of Nitrogen Solutes and Precipitates on LCF of 316L SS, in: H.D. Solomon, G.R. Halford, L.R. Kaisand, and B.N. Leis (Eds. ), Low Cycle Fatigue, ASTM STP 942. ASTM Philadelphia, 1988, pp.798-811.

DOI: 10.1520/stp942-eb

Google Scholar

[4] Dae Whan Kim, Woo-Seog Ryu, Jun Hwa Hong, Si-Kyung Choi, Effect of nitrogen on high temperature low cycle fatiguebehaviors in type 316L stainless steel, J. Nuclear Mater. 254 (1998) 226-233.

DOI: 10.1016/s0022-3115(97)00360-7

Google Scholar

[5] M. Gerland, R. Alain, B. Ait Saadi, J. Mendez, Low cycle fatigue behaviour in vacuum of a 316L-type austenitic stainless steel between 20 and 600°C—Part II: Dislocation structure evolution and correlation with cyclic behaviour, Mater. Sci. Engg. A, 229 (1997).

DOI: 10.1016/s0921-5093(96)10560-8

Google Scholar

[6] A.F. Armas, O.R. Bettin, I. Alvarez-Armas and G.H. Rubiolo, Strain aging effects on the cyclic behavior of austenitic stainless steels, J Nucl. Mater. 155-157 (1988) 646-649.

DOI: 10.1016/0022-3115(88)90388-1

Google Scholar

[7] V.S. Srinivasan, R. Sandhya, K. Bhanu Sankara Rao, S.L. Mannan, K.S. Raghavan, Effects of temperature on the low cycle fatigue behaviour of nitrogen alloyed type 316L stainless steel, Int. J. Fatigue 13(6) (1991) 471-478.

DOI: 10.1016/0142-1123(91)90482-e

Google Scholar

[8] J.O. Nilsson, Efeect of Nitrogenon Creep-Fatigue Interaction in Austenitic stainless steels at 600oC, in: H.D. Solomon, G.R. Halford, L.R. Kaisand, and B.N. Leis (Eds. ), Low Cycle Fatigue, ASTM STP 942. ASTM Philadelphia, 1988, pp.798-811.

DOI: 10.1520/stp942-eb

Google Scholar