Fatigue of annealed and cold worked stable and unstable stainless steels

Schuster, Gary B.; Altstetter, C. J.

doi:10.1007/bf02662374

Cited by 37 publications

(24 citation statements)

References 22 publications

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“…The bulk of the relevant work [4][5][6][7][8][9][10][11][12] suggests that the martensitic transformation decreases the crack growth rate. Excepting reference [11], however, the fatigue crack growth measurements were confined to the Paris, or power-law region of crack growth.…”

Section: In1roductionmentioning

confidence: 99%

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Influence of deformation-induced martensite on fatigue crack propagation in 304-type steels

1990

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Section: In1roductionmentioning

confidence: 99%

“…[8 8 38] hy = _r-:t=. sm Z(2-2v-cosZcos-r-) 2"1 21t1"(l-v) (7) where v is Poisson's ratio. The boundary S varies as the crack extends since fresh material is transformed in the propagating crack tip stress field.…”

Section: Volume Expansionmentioning

confidence: 99%

Influence of deformation-induced martensite on fatigue crack propagation in 304-type steels

1990

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“…6(a), 20% and 30% cold-rolled specimens had lower FCGRs in the lower ÁK region. A previous study 17) reported that deformation induced martensite transformation occurred with unstable stainless steels during the fatigue crack growth process. The volume of martensitic phase is larger than austenite phase, which leads to fatigue crack closure and retards FCGR.…”

Section: Metallographic Featuresmentioning

confidence: 96%

“…10) Martensite transformation, dislocation pile-up and residual stress in the front of a crack tip could bring about fatigue closure, retarding the FCGR. [13][14][15][16][17] At a lower mean stress level, the unstable 301 SS has a lower FCGR than stable 302 SS.…”

Section: Introductionmentioning

confidence: 99%

Corrosion Fatigue Behavior of Cold-Worked 304L Stainless Steel in a Simulated BWR Coolant Environment

2009

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Fatigue crack growth tests were performed to evaluate the effect of cold work on the fatigue behavior of 304L stainless steel in the ambient air at room temperature and 300 C and in a simulated BWR coolant environment, respectively. The fatigue crack growth rates (FCGRs) for the as-received (AR) and cold-rolled specimens at room temperature were in the same range and the FCGRs obtained at 300 C in air were higher than those at room temperature. In addition, the FCGRs for the AR specimens were higher at 300 C in air compared with those for the coldrolled. The specimens tested in the water environment at 300 C showed higher corrosion fatigue crack growth rates (CFCGRs) relative to those measured in air at room temperature and 300 C. Local quasi-cleavages could account for the observation that the FCGRs in air at 300 C were faster than at room temperature. The dominant fracture features of quasi-cleavages, along with corrosion products, were observed with all the 304L specimens tested in the simulated BWR water environment, which could be related to the higher crack growth rates in the corrosive environment.

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“…The effects of martensitic transformation in the fatigue crack growth rate (FCGR) on MASS have been studied in the past [10][11][12][13]. However, to the best of the authors knowledge, there are only two studies of fatigue crack propagation behavior in the near threshold region [11,14] and none in the near threshold region at temperature below the temperature of martensitic transformation of thin sheet specimens.…”

Section: *Manuscriptmentioning

confidence: 99%

Crack closure and fatigue crack growth near threshold of a metastable austenitic stainless steel

Martelo

Mateo

Chapetti

2015

International Journal of Fatigue

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In this paper R-ratio effects on fatigue crack growth near threshold region of a metastable austenitic stainless steel (MASS) in two different conditions, i.e. annealed and cold rolled, is investigated. The authors present two approaches to correlate FCGR data for R = 0.1, 0.3, 0.5, 0.7 and K-max = 23 MPa root m using a two-parameters approach (Delta K, K-max and alpha in Kujawski's model) and crack closure model (using Elber's K-op, and in Donald's ACRn2 approaches). The K-op and ACRn2 were experimentally measured on a single edge tension specimens. The K-op measurements were performed using a modified method and based on ASTM standards. While the two driving force approaches correlate data well in the Paris region, they fail to correlate them in the threshold region. However, this correlation can be improved in the threshold region when a different alpha value from the Paris region is used. The authors indicated that two different mechanisms operate; one in the Paris region and another in the near threshold. Hence, they proposed to combine the two-parameter and crack closure approaches where Delta K is replaced by Delta K-eff (estimated by a new method proposed in this paper), which is shown to correlate the FCGR data for different stress ratios for annealed steel. The correlation for cold rolled condition shows improvement with the new approach but is not as good as for the annealed one. The author further suggests to modify K-max in the two-parameter approach. (C) 2015 Elsevier Ltd. All rights reserved.Peer ReviewedPostprint (author’s final draft

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Fatigue of annealed and cold worked stable and unstable stainless steels

Cited by 37 publications

References 22 publications

Influence of deformation-induced martensite on fatigue crack propagation in 304-type steels

Influence of deformation-induced martensite on fatigue crack propagation in 304-type steels

Corrosion Fatigue Behavior of Cold-Worked 304L Stainless Steel in a Simulated BWR Coolant Environment

Crack closure and fatigue crack growth near threshold of a metastable austenitic stainless steel

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