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

Mei, Z.; Morris, J.W.

doi:10.1007/bf02647310

Cited by 115 publications

(57 citation statements)

References 25 publications

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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%

“…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. The common conclusion of all these studies is that martensitic transformation decreases fatigue crack growth rates.…”

Section: *Manuscriptmentioning

confidence: 99%

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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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Section: *Manuscriptmentioning

confidence: 99%

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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“…The martensitic transformation is temperature dependant [21]. Investigations were carried out targeting the phase transformations during fatigue of 304L and the influence on the fatigue crack propagation [22][23][24][25][26]. It was found [22] that by decreasing the mechanical stability of austenite (either by changing the composition or by lowering the temperature to martensite start temperature on cooling), the fatigue crack growth rate can be decreased when the ^-ratios were low.…”

Section: Crack Propagation Under Combined Axial-torsion Loadingmentioning

confidence: 99%

“…in Eqs. (22) and (23) are independent of stress ratio when using Eq. (17) to predict the crack growth rate after overloading.…”

Section: -T651 Aluminum Alloymentioning

confidence: 99%

Development of a Novel Approach for Fatigue Life Prediction of Structural Materials

Jiang¹

2008

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“…The cooling rate is so fast that austenite is mainly transformed into martensite and bainite [3]. Mei and Morris' study [4] showed that due to the influence of martensite, the fatigue crack growth rate of austenitic stainless steels 304 L was 10 times slower than that of 304 LN in the given condition. It has been reported that microstructure and residual stress relief are affected by tempering temperature in dual phase steels [5,6].…”

Section: Introductionmentioning

confidence: 98%

Statistical Analysis and Fatigue Life Estimations for Quenched and Tempered Steel at Different Tempering Temperatures

Duan³

et al. 2017

Metals

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Abstract:In this paper, the statistical properties and fatigue life estimations of 0.44% carbon steel at different tempering temperatures are presented. The specimens were austenized at 900 • C for 10 min, quenched in water, tempered at different temperatures, and then machined to the design geometry and average surface roughness of R a = 0.4 µm. The effect of tempering temperature on the fatigue life of 0.44% carbon steel was investigated using 75 fatigue tests, divided into three groups at temperatures 500 • C, 600 • C, and 700 • C. S-N and P-S-N curves were established. Two methods of estimating the mean fatigue life are presented. One is based on dislocation dipole accumulation and Paris' law; another is based on the kriging model. Six more fatigue tests were carried out to validate the presented methods. Test results showed that the first method is superior to the second in terms of estimating accuracy from the validation datum. However, the second method could estimate the mean fatigue life of quenched and tempered 0.44% carbon steel with an average surface roughness of R a = 0.4 µm when the tempering temperature was set to a value other than 500 • C, 600 • C, or 700 • C, with no additional fatigue test needed.

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

Cited by 115 publications

References 25 publications

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

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

Development of a Novel Approach for Fatigue Life Prediction of Structural Materials

Statistical Analysis and Fatigue Life Estimations for Quenched and Tempered Steel at Different Tempering Temperatures

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