Crack propagation behavior of solution annealed austenitic high interstitial steels

Schymura, Michael; Stegemann, Robert; Fischer, Alfons

doi:10.1016/j.ijfatigue.2015.04.014

Cited by 23 publications

(10 citation statements)

References 41 publications

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“…Similar observations concerning deformation mechanisms were reported more recently from investigations of a comparable alloying system . In addition, fatigue resistance of high‐interstitial austenitic stainless steels has been shown to be improved compared with conventional FeCrNi austenites . Consequently, due to their high ability to absorb impact energy elastically, their resistance to cavitation erosion turned out to be superior as well .…”

Section: Resultssupporting

confidence: 82%

Profile Cross Rolling of High‐Interstitial Austenitic Stainless Steels for Application in Plastics Extrusion

Forke

Niederhofer²,

Albrecht

et al. 2019

steel research int.

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FeCrMnCN stainless austenitic high-interstitial steels (HIS) combine the properties of conventional FeCrNi austenites (superior ductility and surface corrosion resistance) with the potential of significant strengthening. This combination of properties makes them promising candidates for environments that require resistance to both wear and corrosion, e.g., processing of plastics. The aim herein is to make use of the high work-hardening ability of HIS. Thus, machined preforms with an application-related design are formed by profile cross rolling. The preform design enables a hardness increase in component regions that are most subjected to wear. Rolling of the specimens results in a very high surface quality with a roughness Rz in the range of 1 μm. Hardness measurements in rolled specimens confirm a significant hardness increase in the subsurface up to a depth of %2.5 mm. Hardness values of about 600 HV1 are yielded within a surface distance of %0.3 mm. Furthermore, tests on a modified pin-on-disc tribometer suggest that the wear behavior of the work-hardened HIS is comparable with nitriding steel. Thus, the results of this study support the development of a forming technology for screws in corrosive environments.

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Section: Resultssupporting

confidence: 82%

Profile Cross Rolling of High‐Interstitial Austenitic Stainless Steels for Application in Plastics Extrusion

Forke

Niederhofer²,

Albrecht

et al. 2019

steel research int.

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“…It has been reported earlier that the classical chromium nickel-(carbon + nitrogen < 0.44; lowcarbon and up to 0.4 wt.% nitrogen) as well the austenitic high nitrogen steels (carbon + nitrogen > 0.42; low-carbon and up to 1 wt.% nitrogen) do not have such a high capacity for dissipating plastic work under tensile tests like the so-called austenitic high interstitial steels (carbon + nitrogen > 0.7 and carbon/nitrogen % 0.4), which are characterized by a higher density of free electrons on the sliding planes [12,14,31,32]. This was also attributed to the reason why the twinning induced plasticity-type austenitic high nitrogen steels as well as the austenitic high interstitial steels show a 10 to 100 times slower stable crack propagation in comparison to the chromium nickel-as well as the trans-formation induced plasticity-steels investigated [33]. In the past this was hypothetically related to the stacking fault energy or short-range order effects like for example the molybdenum-nitrogen interaction, but a close and general relation was neither validated nor found with such technical steels [28].…”

Section: Discussionmentioning

confidence: 94%

The influence of the nitrogen/nickel‐ratio on the cyclic behavior of austenitic high strength steels with twinning‐induced plasticity and transformation‐induced plasticity effects

Güler

Schymura

Fischer

et al. 2018

Materialwissenschaft Werkst

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Austenitic high nitrogen (AHNS) and austenitic high interstitial steels (AHIS) are of interest for mechanical engineering applications because of their unique combination of mechanical (strength, ductility), chemical (corrosion resistance) and physical (non-ferromagnetic) properties. But despite their high strength values e. g. after cold deformation up to 2 GPa in combination with an elongation to fracture of 30 %, which is based on twinning-induced plasticity (TWIP) mechanisms and transformation-induced plasticity (TRIP) mechanisms, the fatigue limit remains relatively small. While for chromium-nickel steels the fatigue limit rises with about 0.5-times the elastic limit it does not at all for austenitic high-nitrogen steels or only to a much smaller extent for nickel-free austenitic high-interstitial steels. The reasons are still not fully understood but this behavior can roughly be related to the tendency for planar or wavy slip. Now the latter is hindered by nitrogen and promoted by nickel. This contribution shows the fatigue behavior of chromium-manganese-carbon-nitrogen (CrMnCn) steels with carbon + nitrogen-contents up to 1.07 wt.%. Beside the governing influence of these interstitials on fatigue this study displays, how the nitrogen/nickel-ratio might be another important parameter for the fatigue behavior of such steels.Keywords: Austenitic high strength steels / Ramberg-Osgood / twinning-induced plasticity (TWIP) / transformation-induced plasticity (TRIP) / nitrogen-nickel ratio / cyclic behavior Schlü sselwö rter: Austenitische hochfeste Stä hle / Ramberg-Osgood / durch Zwillingsbildung induzierte Plastizitä t (TWIP) / umwandlungsbewirkte Plastizitä t (TRIP) / Stickstoff-Nickel Verhä ltnis / zyklische Belastung Corresponding author: S. Gü ler, Institut fü r die Technologien der Metalle, Lehrstuhl Werkstofftechnik, Universitä t Duisburg-Essen,

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“…FeCrMnNC austenitic stainless steels known as high interstitial alloys (HIAs) are attractive and economical materials to replace conventional FeCrNi austenitic stainless steels [1][2][3][4][5][6][7][8][9][10]. The main purpose of using C, N, and Mn for HIA is to stabilize the austenite phase instead of Ni being an expensive austenite stabilizer [1,2,4,11].…”

Section: Introductionmentioning

confidence: 99%

Molybdenum Effects on Pitting Corrosion Resistance of FeCrMnMoNC Austenitic Stainless Steels

Lee

Bae

et al. 2018

Metals

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For Fe-based 18Cr10Mn0.4N0.5C(0–2.17)Mo (in wt %) austenitic stainless steels, effects of Mo on pitting corrosion resistance and the improvement mechanism were investigated. Alloying Mo increased pitting and repassivation potentials and enhanced the passive film resistance by decreasing number of point defects in the film. In addition, Mo reduced critical dissolution rate of the alloys in acidified chloride solutions, and the alloy with higher Mo content could remain in the passive state in stronger acid. Thus, it was concluded that the alloying Mo enhanced pitting corrosion resistance of the alloys through increasing protectiveness of passive film and lowering pit growth rate.

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Crack propagation behavior of solution annealed austenitic high interstitial steels

Cited by 23 publications

References 41 publications

Profile Cross Rolling of High‐Interstitial Austenitic Stainless Steels for Application in Plastics Extrusion

Profile Cross Rolling of High‐Interstitial Austenitic Stainless Steels for Application in Plastics Extrusion

The influence of the nitrogen/nickel‐ratio on the cyclic behavior of austenitic high strength steels with twinning‐induced plasticity and transformation‐induced plasticity effects

Molybdenum Effects on Pitting Corrosion Resistance of FeCrMnMoNC Austenitic Stainless Steels

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