Ductile fracture of high strength steels with morphological anisotropy, Part I: Characterization, testing, and void nucleation law

Marteleur, Matthieu; Leclerc, Julien; Nguyễn, Vân Dung; Noels, Ludovic; Pardoen, Thomas

doi:10.1016/j.engfracmech.2021.107569

Cited by 15 publications

(14 citation statements)

References 56 publications

(116 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The material investigated in this study is a high strength steel (HSS), which was received as hot forged hollow cylindrical pieces. In the companion paper -Part I [1] of the work, microstructural analyses of samples taken at various locations in the cylinders did not show heterogeneities along the thickness length. A strong anisotropy on the fracture strain was however found, due to the morphological anisotropy of the MnS inclusions, but with no significant plastic anisotropy.…”

Section: Introductionmentioning

confidence: 85%

“…The elastoplastic parameters, the initial parameters of the void characteristics and the nucleation evolution law ḟV nu , which corresponds to an anisotropic nucleation model to take into account fracture anisotropy and which remains to be validated in this Part II, were calibrated in Part I [1].…”

Section: Parameters Identification For the Nonlocal Gtn-nh/thomason M...mentioning

confidence: 99%

“…Since the elastoplastic behavior and the void nucleation law were identified in the companion paper [1], this Part II focuses on the identification of the remaining parameters of the GTN-NH/Thomason model in both the nonlocal form and in the damage-to-crack transition framework, and on the validation of the full model:…”

Section: Introductionmentioning

confidence: 99%

“…In Section 3, the identification of the GTN-NH/Thomason parameters based on void cell simulations and of the remaining parameters are detailed. Once all material parameters of the nonlocal GTN-NH/Thomason model are available, the experimental tests presented in the companion paper [1] are simulated and the results comparison is conducted in Section 4. The damage-to-crack transition framework is considered in Section 5 to model the crack propagation.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Ductile fracture of high strength steels with morphological anisotropy, Part II: Nonlocal micromechanics-based modeling

Leclerc

Marteleur

Pardoen

et al. 2021

Engineering Fracture Mechanics

Self Cite

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 85%

Section: Parameters Identification For the Nonlocal Gtn-nh/thomason M...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Ductile fracture of high strength steels with morphological anisotropy, Part II: Nonlocal micromechanics-based modeling

Leclerc

Marteleur

Pardoen

et al. 2021

Engineering Fracture Mechanics

Self Cite

View full text Add to dashboard Cite

“…On the fracture surface, there are no cleavage fracture zones, but only a dimple fracture zone and a shear fracture zone. Several studies [28,29] have demonstrated that the inclusion-induced void formation, void coalescence, dimple formation, dimple growth, and the final fracture are the main stages of dimple fracture. From Figure 12 d,e,f the inclusion-induced dimple fracture feature controlled the fracture surface, and more inclusions could be found in the B1 weld metal.…”

Section: Effects Of B Content On Impact Fracture Surfacementioning

confidence: 99%

Effects of Boron Content on the Microstructure and Impact Toughness of 12Cr1MoVR Low-Alloy Heat-Resistant Steel Weld Metals

et al. 2021

View full text Add to dashboard Cite

The impact toughness of low-Cr heat-resistant steel weld metal is an important problem to broaden the application of low-Cr heat-resistant steel. In this study, the microstructure and impact toughness of 12Cr1MoVR low-alloy heat-resistant steel weld metals with various boron contents (B1 = 0.0028%, B2 = 0.0054%, and B3 = 0.0079%) were investigated. The microstructures of all weld metals were composed of block ferrite, carbides, and inclusions. Results indicated that with increased B content, prior austenite grain sizes decreased, and minor microstructure changes could be found. With the increase in B content from 0.0028% to 0.0054% to 0.0079%, the ductile–brittle transition temperature of the weld metals decreased from 30 to 0 to −14 °C, the toughness of weld metal increased, and the hardness slightly decreased, all of which are directly related to the refinement of prior austenite grain size because of the addition of B content. However, on the top-shelf zone, such as at the testing temperature of 80 °C, ductile fracture dominates the fracture surface; with the increase in B content, the size and density of inclusions increased gradually, which led to the decrease of the impact toughness at 80 °C when the B content was 0.0079%.

show abstract

An In Situ Scanning Electron Microscope Study of Void Formation Induced by Typical Inclusions in Low‐Density Steel during Tensile Deformation

Guo

Zhu

Zhou

et al. 2022

steel research int.

View full text Add to dashboard Cite

Herein, the void nucleation induced by typical inclusions in low‐density steel is observed using a scanning electron microscope during the in situ tensile deformations, and the void nucleation mechanism is clarified based on the numerical simulation. The dislocation accumulation and stress concentration are observed around single AlN, MnS, AlN–MnS, aggregated AlN, and aggregated AlN–MnS inclusions. The nucleation and development of the void are through the inclusion cracking or inclusion interface debonding. During the tensile process, the cracking of single AlN and debonding of MnS/matrix induce the void nucleation. For AlN–MnS, the debonding of the internal AlN/MnS interface or external MnS/matrix interface can both induce void formation, which is associated with the relative dimensions of AlN and MnS. Aggregated AlN and aggregated AlN–MnS are suggested to be more harmful to low‐density steel. The void nucleation in aggregated AlN and aggregated AlN–MnS is, respectively, owing to the debonding of the AlN/matrix interface or AlN/MnS interface.

show abstract

Ductile fracture of high strength steels with morphological anisotropy, Part I: Characterization, testing, and void nucleation law

Cited by 15 publications

References 56 publications

Ductile fracture of high strength steels with morphological anisotropy, Part II: Nonlocal micromechanics-based modeling

Ductile fracture of high strength steels with morphological anisotropy, Part II: Nonlocal micromechanics-based modeling

Effects of Boron Content on the Microstructure and Impact Toughness of 12Cr1MoVR Low-Alloy Heat-Resistant Steel Weld Metals

An In Situ Scanning Electron Microscope Study of Void Formation Induced by Typical Inclusions in Low‐Density Steel during Tensile Deformation

Contact Info

Product

Resources

About