Strain rate dependence of deformation behavior of high-nitrogen austenitic steels

Kim, Y.-S.; Nam, Seung Man; Kim, S.-J.

doi:10.1016/j.jmatprotec.2006.11.094

Cited by 19 publications

(3 citation statements)

References 5 publications

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“…The present investigation is focused on the effect of cold rolling on the tensile properties and microstructure evolution of HNSS. Compared with classical stainless steels, [19][20][21][22][23][24] the HNSS used in the present study exhibits a much higher strength and satisfactory ductility, which is attributed to several factors, including chemical composition, grain size and interstitial nitrogen content. The nitrogen strength is due to the misfit between the interstitial nitrogen atoms and the octahedral lattice voids, leading to strains in the surrounding lattice.…”

Section: Discussionmentioning

confidence: 97%

“…Figure 2a and b presents the variation of R m and A with rolling strain for nitrogenous stainless steels including the literature data [19][20][21][22][23][24] respectively. Despite some inconsistency in the absolute values for different nitrogen contents or different rolling techniques, a consistent trend is clear: R m increase linearly with increasing rolling strain in the entire rolling strain range, and A decreases obviously from 0% rolling strain to 50% rolling strain, while a slight decreasing appears when the rolling strain is beyond 50%.…”

Section: Tensile Propertiesmentioning

confidence: 99%

“…1 Engineering stress-strain curves of HNSS under uniaxial tensile test at strain rate of 10 23 s 21 and RT 2 a variation of R m with rolling strain for nitrogenous stainless steels including experimental data from literature [19][20][21][22][23][24] and from the present work, and b variation of A with rolling strain for nitrogenous stainless steels including experimental data from literatures and from the present work…”

Section: Tensile Propertiesmentioning

confidence: 99%

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Effect of cold rolling on tensile properties and microstructure of high nitrogen alloyed austenitic steel

Sun

Jiang

et al. 2014

Materials Science and Technology

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The cold rolling strain effect on the tensile properties of a high nitrogen alloyed austenitic steel was systemically investigated. Quasi-static tensile experiments were performed on the samples with different cold rolling strain. The material possessed good balance between strength and ductility in the entire rolling strain range. Mechanical property and microstructure of the nitrogen alloyed austenitic steel were greatly affected by cold rolling strain. With the increase in cold rolling strain, the strength increased sharply but the ductility declined. That is related to the gradual changes of microstructure induced by the cold rolling process. The cold rolling process leads to substantial microstructural change, from the appearance of slip bands and twins at low cold rolling strain; the microtwins formation at intermediate cold rolling strain and followed by sequences of their bending, breaking and disappearance; and finally to the formation of drossy twins at the high cold rolling strain.

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Section: Discussionmentioning

confidence: 97%

Section: Tensile Propertiesmentioning

confidence: 99%

Section: Tensile Propertiesmentioning

confidence: 99%

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Effect of cold rolling on tensile properties and microstructure of high nitrogen alloyed austenitic steel

Sun

Jiang

et al. 2014

Materials Science and Technology

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Effect of Cold Deformation on Microstructure and Mechanical Properties of a Fe–20Mn–19Cr–0.5C–0.6N High Nitrogen Austenitic Steel

Peng

Shi

Cui

et al. 2017

steel research int.

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The effect of cold deformation on microstructure and mechanical properties of a Fe–20Mn–19Cr–0.5C–0.6N high nitrogen austenitic steel has been studied. Microstructural observations show that the low cold deformation is fully dominated by the dislocation structures, namely, pile‐ups, Taylor lattice, and dislocation cells. With further cold deformation, the effect of twinning induced plasticity and grains fragmentation play an important role during cold deformation process. At critical cold deformation reduction range of 26–36%, the microstructural transitions by dislocation planar slip and multiplication gradually transits to twinning. For mechanical properties, with the increase of cold deformation reduction, the yield strength increases from 0.52 to 1.60 GPa, being increased by three times. The flow stress–strain model of the solution‐treated specimen can be described as . In addition, the strength‐elongation product and the cold deformation reduction present a linear relationship with a correlation coefficient of −0.27 to estimate the variation rate of the strength‐elongation product during cold deformation.

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Influence of hot working on microstructure and mechanical behavior of high nitrogen stainless steel

et al. 2011

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Strain rate dependence of deformation behavior of high-nitrogen austenitic steels

Cited by 19 publications

References 5 publications

Effect of cold rolling on tensile properties and microstructure of high nitrogen alloyed austenitic steel

Effect of cold rolling on tensile properties and microstructure of high nitrogen alloyed austenitic steel

Effect of Cold Deformation on Microstructure and Mechanical Properties of a Fe–20Mn–19Cr–0.5C–0.6N High Nitrogen Austenitic Steel

Influence of hot working on microstructure and mechanical behavior of high nitrogen stainless steel

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