Imposed thermal gradients and resultant residual stresses: Physical and numerical simulations

Mukherjee, Dwaipayan; Tewary, Ujjal; Kumar, Saurabh; Karagadde, Shyamprasad; Verma, Rahul Kumar; Sambandam, Manjini; Samajdar, Indradev

doi:10.1080/02670836.2020.1746537

Cited by 11 publications

(4 citation statements)

References 36 publications

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“…As the temperature increase ( ∼ 160 K) was not very significant, adopting a methodology described in Ref. [56] compressive residual stress of ∼ 10-15 MPa is expected. This is, of course, much lower than the estimated Lorentz force (of ∼ 150 MPa, see appendix) and would not be adequate to deform the IF plastically.…”

Section: Discussionmentioning

confidence: 99%

Electropulsing-induced plastic deformation in an interstitial free steel

Raut

Fuloria

Baka

et al. 2022

Materials Science and Technology

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Direct observations on electropulsing (EP)-induced microstructural evolution, in interstitial free (IF) steel with different prior rolling reductions, brought out clear evidence of plastic deformation, changes in mesostructures and local mechanical properties. Although plastic strains and strain modes differed widely among the surface grains, these appeared orientation-dependent. In particular, the microstructural evolution was more pronounced when prior cold work was present and also along the transverse direction to the introduced EP. Finite element simulations showed a significant difference in locational and directional dependence of simulated magnetic flux density and stored magnetic energy. It appears that magnetic Lorentz force, providing torque to dislocation dipoles, acted as the mechanistic origin behind the microstructural changes.

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Section: Discussionmentioning

confidence: 99%

Electropulsing-induced plastic deformation in an interstitial free steel

Raut

Fuloria

Baka

et al. 2022

Materials Science and Technology

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“…Microstructural characterizations were conducted on the internal surfaces, the long transverse (LT-13) plane containing the rolling (RD-1) and normal (ND-3) directions as seen in figure 1. Characterization techniques involved scanning electron microscopy (SEM), EBSD, residual strain measurements with multiple {hkl} GIXRD [68] and also with micro-Laue diffraction [8,62] and finally AFM. SEM imaging used backscattered electron (BSE) imaging in a FEI TM Nova Nano SEM (with energy selective BSE detector: CBS TM ).…”

Section: Methodsmentioning

confidence: 99%

“…The step size, beam and video conditions were kept identical between the scans. Bulk residual strains were measured with multiple {hkl} GIXRD (grazing incident x-ray diffraction) [68] in a PANalytical TM Empyrean system. Single crystal residual strain measurements [62], on the other hand, were conducted in a Bruker TM D8-Discover system with micro-focus (∼50 μm spot size), video-laser tracker and a Vantec TM area detector.…”

Section: Methodsmentioning

confidence: 99%

Slip band formation in low and high solute aluminum: a combined experimental and modeling study

Prakash¹,

Tak²,

Pai³

et al. 2021

Modelling Simul. Mater. Sci. Eng.

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Direct ex situ observations related slip band formation with deformed microstructures in commercial AA1050 and AA2219. The samples from both grades had similar grain sizes (∼250 μm) and nearly random crystallographic textures. However, AA2219 contained significantly more solute. Slip bands, on the internal long transverse (LT) plane in split channel die specimens, were characterized by primary spacings (λ) of 2–9 μm, heights (Z) of 160–360 nm and secondary shear strains ( γ LT S ). Higher deformation temperatures for both grades increased λ, decreased, Z and r e d u c e d γ LT S . At all deformation temperatures, AA1050 had smaller λ and higher Z, while AA2219 showed higher γ LT S . In-grain misorientations, but not residual strains, were larger in grains with finer λ in AA1050, but less so in AA2219. Discrete dislocation dynamics (DDD) simulations reported realistic slip bands with slip localizations. The simulations, initiated with static obstacles and sources, led to dislocation interactions and junction formation. The probability of junction stabilization (p) determined the ratio of dynamic sources to obstacles. Slip band formation appeared to be an outcome of the release of piled up dislocations leading to dislocation avalanches. Slip localization increased weakly with finer active slip plane spacing (λ *), giving higher dynamic obstacle strengths and densities, but strongly with smaller p. In particular, the DDD simulations captured experimental patterns of higher slip localizations and dislocation densities in low solute aluminum with finer λ *.

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“…Therefore, crystallographic plane (311) was selected for the stress measurement. Various angles used for the measurement of residual stress are well explained elsewhere [27]. The sample was tilted by keeping the angle of incidence of X-ray to the sample (ω) constant and the d-spacing was measured at different ψ angles.…”

Section: Materials Characterizationmentioning

confidence: 99%

High-manganese and nitrogen stabilized austenitic stainless steel (Fe–18Cr–22Mn–0.65N): a material with a bright future for orthopedic implant devices

Kumar

Singh²,

Poddar

et al. 2021

Biomed. Mater.

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The rationale behind the success of nickel free or with extremely low nickel austenitic high manganese and nitrogen stabilized stainless steels is adverse influences of nickel ion on human body. Replacement of nickel by nitrogen and manganese provides a stable microstructure and facilitates better biocompatibility in respect of the conventional 316L austenitic stainless steel (316L SS). In this investigation, biocompatibility of the high-manganese and nitrogen stabilized (Fe–18Cr–22Mn–0.65N) austenitic stainless steel was studied and found highly promising. In vitro cell culture and cell proliferation (MTT) assays were performed on this stainless steel and assessed in respect of the 316L SS. Both the steels exhibited similar cell growth behavior. Furthermore, an enhancement was observed in cell proliferation on the Fe–18Cr–22Mn–0.65N SS after surface modification by ultrasonic shot peening (USP). The mean percent proliferation of the MG-63 cells increased from ≈88% for Un-USP to 98% and 105% for USP 3–2 and USP 2–2 samples, respectively for 5 d of incubation. Interestingly, in vivo animal study performed in rabbits for 3 and 6 weeks showed callus formation and sign of union without any allergic reaction.

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Imposed thermal gradients and resultant residual stresses: Physical and numerical simulations

Cited by 11 publications

References 36 publications

Electropulsing-induced plastic deformation in an interstitial free steel

Electropulsing-induced plastic deformation in an interstitial free steel

Slip band formation in low and high solute aluminum: a combined experimental and modeling study

High-manganese and nitrogen stabilized austenitic stainless steel (Fe–18Cr–22Mn–0.65N): a material with a bright future for orthopedic implant devices

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