Understanding the complete loss of uniform plastic deformation of some ultrafine-grained metallic materials in tensile straining

Schwab, Rainer

doi:10.1016/j.ijplas.2018.10.002

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Conditions Position and Values In Mpa Fixed Support1

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Cited by 19 publications

(2 citation statements)

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“…Every increase in the load of Inconel-718 causes bending in the frame. But the results show that formation of Luder's band occurs at the higher end [6][7][8].…”

Section: Conditions Position and Values In Mpa Fixed Supportmentioning

confidence: 87%

Determination of the Fracture Point for Inconel-718 Using Luder’s Band Method

Gupta,

Kamath

2023

RAiSE-2023

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“…Every increase in the load of Inconel-718 causes bending in the frame. But the results show that formation of Luder's band occurs at the higher end [6][7][8].…”

Section: Conditions Position and Values In Mpa Fixed Supportmentioning

confidence: 87%

Determination of the Fracture Point for Inconel-718 Using Luder’s Band Method

Gupta,

Kamath

2023

RAiSE-2023

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“…The Lüders band deformation is well-known to appear in low carbon ferritic steels showing discontinuous yielding due to the Cottrell atmosphere formed by impurity atoms around dislocations. In recent years, it has been shown that the Lüders bands' deformation can appear in most of the polycrystalline metals and alloys when their grain sizes are decreased down to an ultra-fine range below 1-2 µm [24][25][26][27][28][29][30][31][32]. The discontinuous yielding in UFG metals is probably because the number of mobile dislocations within each grain becomes too small to initiate the plastic deformation of the specimen in a continuous manner [28,33].…”

Section: Methodsmentioning

confidence: 99%

Tensile Deformation of Ultrafine-Grained Fe-Mn-Al-Ni-C Alloy Studied by In Situ Synchrotron Radiation X-ray Diffraction

et al. 2020

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Intermetallic compounds are usually considered as deleterious phase in alloy designing and processing since their brittleness leads to poor ductility and premature failure during deformation of the alloys. However, several studies recently found that some alloys containing large amounts of NiAl-type intermetallic particles exhibited not only high strength but also good tensile ductility. To clarify the role of the intermetallic particles in the excellent tensile properties of such alloys, the tensile deformation behavior of an ultrafine-grained Fe-Mn-Al-Ni-C alloy containing austenite matrix and B2 intermetallic particles was investigated by using in situ synchrotron radiation X-ray diffraction in the present study. The elastic stress partitioning behavior of two constituent phases during tensile deformation were quantitively measured, and it was suggested that B2 particles played an important role in the high strength and large tensile ductility of the material.

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