Effect of surface and bulk plastic deformations on the corrosion resistance and corrosion fatigue performance of AISI 316L

Ahmed, Aymen A.; Mhaede, Mansour; Wollmann, Manfred; Wagner, Lothar

doi:10.1016/j.surfcoat.2014.10.052

Cited by 40 publications

(15 citation statements)

References 39 publications

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“…In addition, because of the significant strengthening effect with low strain [40] and excellent grain refinement ability [48], RS is employed to fabricate the workpieces with ultrafine-grained (UFG) structure or even NG structure. Recently, RS processed materials were reported to exhibit excellent mechanical [40,41,[49][50][51][52][53], fatigue [54][55][56], corrosion [57][58][59][60], tribological [61], electrical properties [61][62][63], etc. We will discuss them in detail in Section 3.…”

Section: Rotary Swaging 21 Theory Of Rotary Swagingmentioning

confidence: 99%

Nano-Gradient Materials Prepared by Rotary Swaging

Chen

Zhao

2021

Nanomaterials

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Gradient nanostructured metallic materials with a nanostructured surface layer show immense potential for various industrial applications because of their outstanding mechanical, fatigue, corrosion, tribological properties, etc. In the past several decades, various methods for fabricating gradient nanostructure have been developed. Nevertheless, the thickness of gradient microstructure is still in the micrometer scale due to the limitation of preparation techniques. As a traditional but potential technology, rotary swaging (RS) allows gradient stress and strain to be distributed across the radial direction of a bulk cylindrical workpiece. Therefore, in this review paper, we have systematically summarized gradient and even nano-gradient materials prepared by RS. We found that metals processed by RS usually possess inverse nano-gradient, i.e., nano-grains appear in the sample center, texture-gradient and dislocation density-gradient along the radial direction. Moreover, a broad gradient structure is distributed from center to edge of the whole processed rods. In addition, properties including micro-hardness, conductivity, corrosion, etc., of RS processed metals are also reviewed and discussed. Finally, we look forward to the future prospects and further research work for the RS processed materials.

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Section: Rotary Swaging 21 Theory Of Rotary Swagingmentioning

confidence: 99%

Nano-Gradient Materials Prepared by Rotary Swaging

Chen

Zhao

2021

Nanomaterials

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“…1. competition between pit growth and short crack propagation [1,2], 2. preferential dissolution of plastically deformed material [3,19,20,8,14], 3. local rupture of the passive film by slip bands [4][5][6][21][22][23][24] and 4. lowering of surface energy due to adsorption of specific species from the environment [7].…”

Section: Introductionmentioning

confidence: 99%

Modelling of corrosion fatigue crack initiation on martensitic stainless steel in high cycle fatigue regime

et al. 2018

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This paper presents an analytical model for assessing the corrosion fatigue crack initiation life on a martensitic stainless steel X12CrNiMoV12-3 in high cycle fatigue regime (between 10 5 and 10 7 cycles). Based on in-situ electrochemical measurements during corrosion fatigue tests in NaCl aqueous solution, the corrosion fatigue crack initiation mechanism was identified. Two main stages were investigated: (i) the fracture of the passive film by slip bands and (ii) the free dissolution of the metal developing fatigue crack initiation from a critical corrosion defect. The depassivation stress threshold corresponds to the median fatigue strength at 10 7 cycles for fatigue corrosion tests. For an applied stress range less than this threshold, the depassivation phenomenon was not observed at 10 7 cycles and no crack initiation occurred. The proposed model takes into account the depassivation process induced by the slip bands emergence at the specimen surface and the corrosion rate under cyclic loading. The experimental results are compared to the proposed model taking into account mechanical and electrochemical material parameters.

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“…The change in the fatigue behavior of 316L stainless steel weldments is frequently related to microstructural modifications [ 2 ]. Bulk deformation by rotary swaging and surface deformation by shot peening improve fatigue life in air and in Ringer’s solution [ 3 ]. The rotary swaged material improved corrosion resistance, while shot peening led to lower corrosion resistance [ 3 ]; however, increasing the shot peening time also produces an improvement in the resistance to pitting corrosion [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Corrosion-Fatigue Crack Growth in Plates: A Model Based on the Paris Law

2017

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In this paper, a Paris law-based model is presented whereby crack propagation occurs under cyclic loading in air (fatigue) and in an aggressive environment (corrosion-fatigue) for the case of corner cracks (with a wide range of aspect ratios in the matter of the initial cracks) in finite-thickness plates of 316L austenitic stainless steel subjected to tension, bending, or combined (tension + bending) loading. Results show that the cracks tend during their growth towards a preferential propagation path, exhibiting aspect ratios slightly lower than unity only for the case of very shallow cracks, and diminishing as the crack grows (increasing the relative crack depth)—more intensely in the case of bending than in the case of tension (the mixed loading tension/bending representing an intermediate case). In addition, the crack aspect ratios during fatigue propagation evolution are lower in fatigue (in air) than in corrosion-fatigue (in aggressive environment).

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Effect of surface and bulk plastic deformations on the corrosion resistance and corrosion fatigue performance of AISI 316L

Cited by 40 publications

References 39 publications

Nano-Gradient Materials Prepared by Rotary Swaging

Nano-Gradient Materials Prepared by Rotary Swaging

Modelling of corrosion fatigue crack initiation on martensitic stainless steel in high cycle fatigue regime

Corrosion-Fatigue Crack Growth in Plates: A Model Based on the Paris Law

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