Fundamental insights on ductile to brittle transition phenomenon in ferritic steel

Barik, Rakesh Kumar; Ghosh, Abhijit; Chakrabarti, Debalay

doi:10.1016/j.mtla.2022.101667

Cited by 10 publications

(2 citation statements)

References 112 publications

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“…Intergranular precipitates, on the other hand, can efficiently limit brittle fracture and lower the energy required for crystal-piercing fracture. [37] Several investigations [38,39] suggested that intergranular precipitates are connected to brittleness generation. HTE generation, on the other hand, is mostly determined by grain coarsening and intragranular precipitates.…”

Section: Microstructurementioning

confidence: 99%

Microstructure Evolution and Mechanical Properties of Ferrite–Austenite Stainless Steel Bimetals Fabricated via Wire Arc Additive Manufacturing

Wang,

Wu,

Sun

et al. 2023

steel research int.

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A bimetallic structure is implemented by wire arc additive manufacturing from 316L austenitic stainless steel to 430 ferritic stainless steel. Microstructure, interface characteristics, and tensile properties of 316L‐430 bimetals are investigated. In 316L/430 bimetals, defects like porosity and cracks are not present. The compositional distribution and microstructure evolution of 316L‐430 bimetallic deposition are significantly impacted by the deposition sequence and heat input. As heat input increases, microstructure evolution of 430 deposited layer is single F → F+ diffusely distributed (Cr, Fe)23C6 → F+ grain internal (Cr, Fe)23C6 → F + M, and 316L deposited layer presents typical austenite + skeletal δ ferrite. Microstructure of 430 deposited layers presents heterogeneous, grain coarsening, and martensite along grain boundaries, resulting in high‐temperature embrittlement. The highest hardness of 316L‐430 bimetals appears on 430 sides near the interface. The tensile strength of 430/316L bimetals is greater than that of 316L/430, and the tensile specimens exhibit brittle fracture.

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Section: Microstructurementioning

confidence: 99%

Microstructure Evolution and Mechanical Properties of Ferrite–Austenite Stainless Steel Bimetals Fabricated via Wire Arc Additive Manufacturing

Wang,

Wu,

Sun

et al. 2023

steel research int.

View full text Add to dashboard Cite

show abstract

“…The results indicated that the Gaussian Approximation Potential (GAP) predicts more reliable core structure and Peierls potential than previous EAM potentials [13]. On the other side, DFT has been also applied to compute kink pair activation barrier as a function of stress in BCC metals using a line tension model [14] DFT and experiments on kink pair activation can be found in a recent review paper [15].…”

Section: Introductionmentioning

confidence: 99%

Effect of periodic image interactions on kink pair activation of screw dislocation

Shuang

Xiong

et al. 2023

Computational Materials Science

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Investigating the ductile to brittle transition phenomenon in binary Fe-Ni systems using molecular dynamics simulation

Barik,

Jayasree,

Biswal

et al. 2024

Journal of the Mechanics and Physics of Solids

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Fundamental insights on ductile to brittle transition phenomenon in ferritic steel

Cited by 10 publications

References 112 publications

Microstructure Evolution and Mechanical Properties of Ferrite–Austenite Stainless Steel Bimetals Fabricated via Wire Arc Additive Manufacturing

Microstructure Evolution and Mechanical Properties of Ferrite–Austenite Stainless Steel Bimetals Fabricated via Wire Arc Additive Manufacturing

Effect of periodic image interactions on kink pair activation of screw dislocation

Investigating the ductile to brittle transition phenomenon in binary Fe-Ni systems using molecular dynamics simulation

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