Crystallographic orientation and boundary effects on misorientation development in austenitic stainless steel

Chakrabarty, Shanta; Mishra, Sushil; Pant, Prita

doi:10.1016/j.msea.2014.08.058

Cited by 19 publications

(2 citation statements)

References 39 publications

(55 reference statements)

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“…It has been shown previously that initial grain orientation has a great influence on its behavior upon biaxial tensile loading. The same statement was observed under uniaxial tension by Chakrabarty et al [36] and modeled by Raabe et al [37]. Both authors observed a strong influence of the initial crystallography on misorientations development.…”

Section: Microstructural Response To Tensile Biaxial Loadingsupporting

confidence: 77%

Local behavior of an AISI 304 stainless steel submitted to in situ biaxial loading in SEM

Caer

Pesci

2017

Materials Science and Engineering: A

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The microstructural response of a coarse grained AISI 304 stainless steel submitted to biaxial tensile loading was investigated using SEM and X-ray diffraction. The specimen geometry was designed to allow for biaxial stress state and incipient crack in the center of the active part under biaxial tensile loading. This complex loading was performed step by step by a micromachine fitting into a SEM chamber. At each loading step FSD pictures and EBSD measurements were carried out to study the microstructural evolution of the alloy, namely grain rotations and misorientations, stress-induced martensite formation and crack propagation. According to their initial orientation, grains are found to behave differently under loading. Approximately 60% of grains are shown to reorient to the [110] Z orientation under biaxial tensile loading, whereas the 40% left undergo high plastic deformation. EBSD and XRD measurements respectively performed under loading and on the post mortem specimen highlighted the formation of about 4% of martensite.

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Section: Microstructural Response To Tensile Biaxial Loadingsupporting

confidence: 77%

Local behavior of an AISI 304 stainless steel submitted to in situ biaxial loading in SEM

Caer

Pesci

2017

Materials Science and Engineering: A

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“…Measurement points above 0.1 confidence index (CI) were used for subsequent analysis as CI is considered to be a statistical estimate for relative accuracy of automated indexing. 20 Measurement points of the boundaries exceeding 2º misorientation were considered as grains. The EBSD data were used to estimate grain size, kernel average misorientation (KAM), twin fraction, and average twin length for all scans.…”

Section: Microstructural Characterizationmentioning

confidence: 99%

Investigations of size effect on formability and microstructure evolution in SS304 thin foils

Sahu

Chakrabarty

Raghavan

et al. 2018

The Journal of Strain Analysis for Engineering Design

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In the micro-forming process when the thickness of the sheet material is comparable to the intrinsic length scales of that material, deformation behaviour differs from that which is expected in the macroscopic sheet material. In this study, size effects of SS304 foils have been investigated using tensile and limiting dome height tests along with careful microstructural investigations. SS304 foils of differing thicknesses but similar grain size have been deformed under varying strain path conditions to capture the impact of foil thickness on the mechanical response and microstructure evolution. Formability curves for SS304 foils constructed from limiting dome height tests show that limit strains increase with increasing foil thickness. Microstructure investigations highlight the importance of grain misorientation, twin fraction and texture on the formability of SS304 foils.

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The effect of grain boundary character distribution on the mechanical properties at different strain rates of a 316L stainless steel

et al. 2017

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Crystallographic orientation and boundary effects on misorientation development in austenitic stainless steel

Cited by 19 publications

References 39 publications

Local behavior of an AISI 304 stainless steel submitted to in situ biaxial loading in SEM

Local behavior of an AISI 304 stainless steel submitted to in situ biaxial loading in SEM

Investigations of size effect on formability and microstructure evolution in SS304 thin foils

The effect of grain boundary character distribution on the mechanical properties at different strain rates of a 316L stainless steel

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