Growth of short cracks during low and high cycle fatigue in a duplex stainless steel

Alvarez‐Armas, I.; Krupp, Ulrich; Balbi, M.; Hereñú, S.; Marinelli, M.C.; Knobbe, Helge

doi:10.1016/j.ijfatigue.2012.01.010

Cited by 50 publications

(25 citation statements)

References 18 publications

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“…Cracks that were initiated as described above interact strongly with those barriers leading to an oscillation in the fatigue crack propagation rate da/dN. Such a behavior was reported for LCF, HCF and VHCF loading conditions [2,6]. Based on the hypothesis that the yield strip ahead of the crack tip is blocked by a dislocation pile up at the adjacent grain or phase boundary, Künkler [15] developed a numerical model, where the displacement field within the crack and the plastic zones is accounted for by boundary elements (BE).…”

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confidence: 58%

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The behavior of short fatigue cracks during Very High Cycle (VHCF) Fatigue of duplex stainless steel

Krupp¹,

Giertler²,

Söker³

et al. 2015

Engineering Fracture Mechanics

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confidence: 58%

“…According to Mughrabi [3], in VHCF fatigue failure may occur far beyond the "classical" fatigue limit experimentally determined for N f =10 7 [6,7]). The accumulation of plastic slip within the fcc austenitic grains due to cyclic irreversibility (cf.…”

mentioning

confidence: 99%

The behavior of short fatigue cracks during Very High Cycle (VHCF) Fatigue of duplex stainless steel

Krupp¹,

Giertler²,

Söker³

et al. 2015

Engineering Fracture Mechanics

Self Cite

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“…Meanwhile, part of cracks also can pass through the ferrite after a relatively long time. Generally speaking, ferrite phase often can strengthen the matrix alloy by hindering crack propagation in most cracking process, such as SCC, fracture, and fatigue …”

Section: Resultsmentioning

confidence: 99%

Effect of machining on the stress corrosion cracking behavior in boiling magnesium chloride solution of austenitic stainless steel

Fang

et al. 2017

Materials & Corrosion

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The stress corrosion cracking (SCC) behaviors of Z3CN20.09M, 304L, and 316L austenitic stainless steels (SSs) after milling operation in boiling magnesium chloride solution were investigated by scanning electron microscopy (SEM), X‐ray diffraction, and 3D profilometer. The experimental results indicated that the roughness and residual stress increased with increasing feed rate of all specimens. The depth of deformation layer after milling operation reached about 150 µm shown as persistent slip bands (PSBs) were formed, leading to hardness enhanced obviously. After SCC tests in boiling magnesium chloride solution, the crack densities increased with increasing feed rate of the Z3CN20.09M SS specimens. However, the crack densities decreased as well as the intergranular (IG) cracking percentages increased with increasing feed rate of the 304L and 316L SS.

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“…The material acts like a tank, which accumulates the energy for overpassing the grain boundaries. Considering that the duplex steel presents the austenitic clusters embedded in the ferritic bulk, the phase‐to‐phase grain boundary represents a barrier for dislocation movements . To support this assumption, optical micrographs (Figure A) and SEM micrographs (Figure B) are shown, capable of demonstrating the role of grain boundary activity on microstructural phenomena involved in fatigue.…”

Section: Discussion Of the Correlation Between Temperature Variationsmentioning

confidence: 90%

Is the temperature plateau of a self‐heating test a robust parameter to investigate the fatigue limit of steels with thermography?

Finis

Palumbo

Silva

et al. 2017

Fatigue Fract Eng Mat Struct

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A critical aspect of standard test methods for fatigue characterization is that they do not provide any information on heat dissipation in the material and involve very expensive experimental campaigns in time and costs. In recent years, thermographic methods capable of reducing testing time have been developed, also providing more information on damage occurring in the material. A commonly used approach is based on the assessment of the temperature plateau during a stepwise loading procedure. At times, however, this approach can fail if temperature stabilization is not achieved. In this regard, in this paper, a new approach based on the assessment of 3 different thermal indexes was proposed to estimate the fatigue limit of 3 stainless steels: AISI 316, 17‐4PH, and ASTMA890 grade 4a, respectively, exhibiting fully austenitic, fully martensitic, and duplex biphasic microstructure. The fatigue tests were carried out by using a stepwise loading procedure, under loading ratio of 0.5. The analysis demonstrated the possibility to further reduce testing time and, consequently, the fatigue experimental campaign. Moreover, some ideas are discussed about how to justify the different thermal behaviour of a biphasic stainless steel, in total temperature variation. Moreover, a discussion of results regarding the various thermal behaviours of the investigated steels and a possible correlation with the microstructure has been proposed.

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Growth of short cracks during low and high cycle fatigue in a duplex stainless steel

Cited by 50 publications

References 18 publications

The behavior of short fatigue cracks during Very High Cycle (VHCF) Fatigue of duplex stainless steel

The behavior of short fatigue cracks during Very High Cycle (VHCF) Fatigue of duplex stainless steel

Effect of machining on the stress corrosion cracking behavior in boiling magnesium chloride solution of austenitic stainless steel

Is the temperature plateau of a self‐heating test a robust parameter to investigate the fatigue limit of steels with thermography?

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