Enhanced fatigue resistance in 316L austenitic stainless steel due to low-temperature paraequilibrium carburization

Agarwal, Nitin; Kahn, H.; Avishai, Amir; Michal, G. M.; Ernst, F.; Heuer, A. H.

doi:10.1016/j.actamat.2007.06.025

Cited by 79 publications

(70 citation statements)

References 19 publications

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“…Roland et al [7] and Yang et al [8] showed that a stainless steel with surface mechanical attrition treatment and a pure Cu with surface mechanical grinding treatment had higher fatigue strength than the original materials, especially in high cycle fatigue regime. Other articles [10][11][12][13][14][15] also reported similar results of different materials with various types of surface treatments. All these investigations attributed the enhancement of the fatigue strength for the treated specimens or components to the grain refinement and the compressive residual stress caused by surface strengthening treatment.…”

Section: Introductionsupporting

confidence: 54%

“…Besides the effect of microstructure, residual stress is another significant factor that affects the fatigue crack behavior of surface strengthened materials. It was reported that compressive residual stress caused by un-uniform plastic deformation within the gradient layer, improved the fatigue resistance of 316 stainless steel, pure Cu and other alloys [7][8][9][10][11] and the gradient distribution of residual stress induced extra difficulty in the analysis of fatigue crack growth [25][26][27][28]. Thus, traditional fatigue theories which can describe the fatigue crack growth behavior in homogeneous materials are no longer applicable for the materials with gradient surface layer.…”

Section: Introductionmentioning

confidence: 99%

“…According to Eqs. (10) and (11), both the loading level and the material properties influence the value of plastic zone size and crack opening displacement. The estimations showed that, under the same loading condition, the value of r p at 3 mm depth is 2.5 times of that at 2 mm depth and the value of δ at 3 mm depth is 1.5 times of that at 2 mm depth, respectively, which means that the plastic zone size and the crack opening displacement increase rapidly as the fatigue crack growing through the gradient layer (from hardened surface gradually to the original microstructure).…”

Section: Crack Tip Plasticitymentioning

confidence: 99%

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Fatigue crack growth behavior in gradient microstructure of hardened surface layer for an axle steel

Zhang

Xie

Jiang

et al. 2017

Materials Science and Engineering: A

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A B S T R A C TThis paper experimentally investigated the behavior of fatigue crack growth of an axle steel with a surface strengthened gradient microstructure layer. First, the microstructure, residual stress and mechanical properties were examined as a function of depth from surface. Then the fatigue crack growth rate was measured via three point bending fatigue testing. The results indicated that fatigue crack growth rate decelerated first and then accelerated with the increase of crack length within the gradient layer. Especially, the fatigue crack was arrested in the gradient layer under relatively low stress amplitude due to the increase of threshold value for crack growth within the range of 3 mm from surface. Based on these results, the parameters of Paris equation and the threshold value of stress intensity factor range within the gradient layer were determined and a curved surface was constructed to correlate crack growth rate with stress intensity factor range and the depth from surface. The effects of microstructure, residual stress and surface notch on the crack growth behavior were also discussed.

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Section: Introductionsupporting

confidence: 54%

Section: Introductionmentioning

confidence: 99%

Section: Crack Tip Plasticitymentioning

confidence: 99%

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Fatigue crack growth behavior in gradient microstructure of hardened surface layer for an axle steel

Zhang

Xie

Jiang

et al. 2017

Materials Science and Engineering: A

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“…It has been reported that thermochemical processes, such as nitriding, and mechanical surface treatments such as roller burnishing, can induce subsurface fatigue crack nucleation [45][46][47][48][49]. This has been attributed to the compressive-tensile stress profile generated below the surface of the material.…”

Section: Fracture Topographymentioning

confidence: 99%

Evaluating the effects of plasma diffusion processing and duplex diffusion/PVD-coating on the fatigue performance of Ti–6Al–4V alloy

Cassar

Wilson²,

Banfield

et al. 2011

International Journal of Fatigue

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a b s t r a c tThe effect of triode-plasma enhanced low-pressure oxygen and/or nitrogen diffusion treatments, either as a single process or in conjunction with plasma-assisted physical vapour deposition (PAPVD) on Ti6Al-4V has been studied under rotating-bending fatigue testing. Following the diffusion treatment, samples exhibit a hardened case, more than 30 lm deep. Semi-logarithmic S-N plots are used to demonstrate and compare the significant changes in fatigue resistance obtained from each process. Fractography and residual stress measurements show that, compared to annealed samples, the fatigue strength of the diffusion-treated samples was superior; although the result changed depending on the processing parameters and microstructure of the substrate material. Also, unsupported and mechanically uncompliant ceramic coatings, such as TiN, promote the initiation of multiple crack sites, which lead to premature failure of the Ti-alloy substrate and a consequent reduction in endurance limit.

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“…The carburized and/or nitrided layer is called as the S-phase, [9][10][11] where not only hardness is extremely increased but also resistance against fatigue and corrosion is further improved. [13][14][15][16] In order for this low-temperature carburizing to be done successfully, however, surface activation treatment is unavoidable for the stainless steels since the Cr 2 O 3 passive film that forms on the surface of the stainless steels, and plays a key role in their good corrosion resistance, effectively inhibits the carburization. Plasma treatment, or NF 6 or HCl gas treatment is therefore necessary to remove the passive film and activate the surface of the stainless steels before the carburizing.…”

Section: Introductionmentioning

confidence: 99%

Novel Low-temperature Solid-carburizing Using C60 Fullerene for Austenitic Stainless Steel SUS316L

2012

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In this study, the full potential of C60 fullerene for use in the low-temperature solid-carburizing of SUS316L stainless steel is demonstrated. The carburizing of this austenitic stainless steel with C60 was conducted in a vacuum atmosphere without any surface activation treatment of the specimen surfaces. The uncarburized SUS316L had the lattice parameter of approx. 3.5963 ± 0.0001 Å and the Vickers hardness of 172 MPa measured by the Nanoindentation method. After carburizing at 475°C for 200 h, the lattice parameter of the specimen surface was approx. 3.6545 ± 0.0001 Å and the Vickers hardness was approx. 742 MPa. After carburizing at 500°C for 100 h, the lattice parameter of the specimen surface was approx. 3.6592 ± 0.0002 Å and the Vickers hardness was approx. 837 MPa. These results are comparable to those obtained by low-temperature gas-and plasma-carburizing reported in previous works.

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Enhanced fatigue resistance in 316L austenitic stainless steel due to low-temperature paraequilibrium carburization

Cited by 79 publications

References 19 publications

Fatigue crack growth behavior in gradient microstructure of hardened surface layer for an axle steel

Fatigue crack growth behavior in gradient microstructure of hardened surface layer for an axle steel

Evaluating the effects of plasma diffusion processing and duplex diffusion/PVD-coating on the fatigue performance of Ti–6Al–4V alloy

Novel Low-temperature Solid-carburizing Using C60 Fullerene for Austenitic Stainless Steel SUS316L

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