Precipitation formation on ∑5 and ∑7 grain boundaries in 316L stainless steel and their roles on intergranular corrosion

Tsai, Shao-Pu; Makineni, Surendra Kumar; Gault, Baptiste; Kawano-Miyata, Kaori; Taniyama, Akira; Zaefferer, Stefan

doi:10.1016/j.actamat.2021.116822

Cited by 41 publications

(6 citation statements)

References 70 publications

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“…Coherent and incoherent twin boundaries differ in their habit plane and hence the grain boundary energy [32,33]. Details of their morphology, such as nanoscale steps [32,34], cannot be readily seen from a low-resolution EBSD inverse pole figure (IPF) map, a coherent boundary must be carefully identified through trace analysis in the EBSD. The structure of several Ʃ3 twin boundaries was hence investigated by ECCI and a coherent and an incoherent Ʃ3 twin boundary are studied.…”

mentioning

confidence: 99%

Hydrogen embrittlement of twinning-induced plasticity steels: Contribution of segregation to twin boundaries

et al. 2023

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confidence: 99%

Hydrogen embrittlement of twinning-induced plasticity steels: Contribution of segregation to twin boundaries

et al. 2023

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“…Furthermore, the other phases, such as the sigma, chromium carbide, and chromium nitride, may occur during equilibrium cooling conditions or long-time heat exposure. The phase heterogeneity in SS 316L promotes the corrosion of the stainless steel [6][7][8]. The corrosion triggers the release of elements such as Fe, Cr, Ni, and other alloy contents.…”

Section: Surface Morphology and Chemical Analysis Of The Latticementioning

confidence: 99%

“…Another challenge that may cause the failure of SS316L implant is the potential possibility for secondary phases or precipitation phases in material to occur during implant fabrication or working conditions [6,7]. The precipitates lead to localized corrosion of the SS316L when subjected to human body fluids and release unused elements that may become toxic inside the human body [8][9][10]. Therefore, efforts to fabricate good austenitic stainless steel that matches the density and stiffness of human ribs are necessary.…”

Section: Introductionmentioning

confidence: 99%

Selective Laser Melting of Stainless Steel 316L with Face-Centered-Cubic-Based Lattice Structures to Produce Rib Implants

2021

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Selective laser melting has a great potential to manufacture biocompatible metal alloy scaffolds or implants with a regulated porosity structure. This study uses five face-centered cubic (FCC) lattice structures, including FCC, FCC-Z, S-FCC, S-FCC-Z, and FCC-XYZ. Specimens with different lattice structures are fabricated using two laser energy densities, 71 J/mm3 and 125 J/mm3. Density, tensile, compressive and flexural test results exhibit the effect of laser parameters and lattice structure geometries on mechanical properties. The higher laser energy density of 125 J/mm3 results in higher properties such as density, strength, and Young’s modulus than the laser energy density of 71 J/mm3. The S-FCC lattice has the lowest density among all lattices. The mechanical tests result show specimen with FCC-XYZ lattice structures fabricated using a laser energy density of 125 J/mm3 meet the tensile properties requirement for human ribs. This structure also meets the requirement in flexural strength performance, but its stiffness is over that of human ribs. The compression test results of lattices are still incomparable due to unavailable compression data of the human ribs. In short, The FCC-XYZ lattice design fabricated by the 125 J/mm3 laser energy density parameter can be used to manufacture customized rib implants.

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“…Grain boundary engineering (GBE), as a widely used microstructure control approach, is derived from the idea of grain boundary control and design, initially introduced by Watanabe [ 1 ]. Over the past few decades, GBE has been successfully employed to alleviate the susceptibility of materials to a variety of intergranular-related degradation events, including intergranular corrosion [ 2 , 3 , 4 , 5 ], fatigue [ 6 , 7 ], precipitation [ 8 , 9 , 10 ], embrittlement [ 11 , 12 ], weld cracking [ 13 ], etc. The fundamental idea behind GBE is to increase the fraction of low-Σ coincidence site lattice (CSL) boundaries and break the connectivity of a random boundary network in face-centered cubic metallic materials with low-stacking fault energies through suitable thermomechanical processing (TMP) routes.…”

Section: Introductionmentioning

confidence: 99%

Evolution of Grain Boundary Character Distribution in B10 Alloy from Friction Stir Processing to Annealing Treatment

Feng,

Zhou,

Wang

et al. 2024

Materials

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In this study, the grain boundary character distribution (GBCD) of a B10 alloy was optimized, employing thermomechanical processing consisting of friction stirring processing (FSP) and annealing treatment. Using electron backscatter diffraction, the effects of rotational speed of FSP and annealing time on the evolution of GBCD were systematically investigated. The GBCD evolution was analyzed concerning various parameters, such as the fraction of low-Σ coincidence site lattice (CSL) boundaries, the average number of grains per twin-related domain (TRD), the length of longest chain (LLC), and the triple junction distribution. The experimental results revealed that the processing of a 1400 rpm rotational speed of FSP followed by annealing at 750 °C for 60 min resulted in the optimum grain boundary engineering (GBE) microstructure with the highest fraction of low-Σ CSL boundaries being 82.50% and a significantly fragmented random boundary network, as corroborated by the highest average number of grains per TRD (14.73) with the maximum LLC (2.14) as well as the highest J2/(1 − J3) value (12.76%). As the rotational speed of FSP increased from 600 rpm to 1400 rpm, the fraction of low-Σ CSL boundaries monotonously increased. The fraction of low-Σ CSL boundaries first increased and then decreased with an increase in annealing time. The key to achieving GBE lies in inhibiting the recrystallization phenomenon while stimulating abundant multiple twinning events through strain-induced boundary migration.

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Precipitation formation on ∑5 and ∑7 grain boundaries in 316L stainless steel and their roles on intergranular corrosion

Cited by 41 publications

References 70 publications

Hydrogen embrittlement of twinning-induced plasticity steels: Contribution of segregation to twin boundaries

Hydrogen embrittlement of twinning-induced plasticity steels: Contribution of segregation to twin boundaries

Selective Laser Melting of Stainless Steel 316L with Face-Centered-Cubic-Based Lattice Structures to Produce Rib Implants

Evolution of Grain Boundary Character Distribution in B10 Alloy from Friction Stir Processing to Annealing Treatment

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