Some Microstructural Aspects of Ductile Fracture of Metals

Wciślik, Wiktor; Pała, Robert

doi:10.3390/ma14154321

Cited by 23 publications

(16 citation statements)

References 113 publications

(150 reference statements)

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“…The steel plate was damaged by ductile fracture with fine dimples stretched in the direction of the projectile impact. Such dimples, clearly visible in Figure 14 a, are formed as a result of the micropore growth in the material during plastic deformation [ 81 ]. This testifies to the shear nature of the material damage at the edge of the inlet of hit ( Figure 14 ).…”

Section: Resultsmentioning

confidence: 99%

Three-Dimensional Smooth Particle Hydrodynamics Modeling and Experimental Analysis of the Ballistic Performance of Steel-Based FML Targets

et al. 2022

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In this paper, shields made of 1.3964 stainless steel bonded to a fiber laminate were subjected to ballistic impact response of 7.62 × 51 mm ŁPS (light projectile with a lead core) projectiles. Additionally, between the steel sheet metal and the laminate, a liquid-filled bag was placed, which was a mixture of ethylene glycol (C2H6O2) with 5 wt.% SiO2 nanopowder. Numerical modeling of the projectile penetrating the samples was carried out using the finite element method in the Abaqus program. The elasto-plastic behavior of the projectile material and the component layers of the shields was taken into account. Projectile penetration through glycol-filled bag has been performed using the smooth particle hydrodynamics technique. The morphology of the penetration channel was also analyzed using a scanning electron microscope. For the shield variant with a glycol-filled bag between the steel and laminate plates, the inlet speed of projectile was 834 m/s on average, and 366 m/s behind the sample. For the variant where there was no glycol-filled bag between the steel and laminate plates, the inlet and outlet average velocities were 836 m/s, after 481 m/s, respectively. Referring to the steel-glycol-laminate and steel-laminate variants, it can be concluded that the laminate-glycol-laminate is more effective.

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Section: Resultsmentioning

confidence: 99%

Three-Dimensional Smooth Particle Hydrodynamics Modeling and Experimental Analysis of the Ballistic Performance of Steel-Based FML Targets

et al. 2022

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“…This review article presents the current state of knowledge relating to the numerical modelling of the nucleation, growth and coalescence of voids in metal alloys for technical applications. It is a continuation of the subject discussed in [ 17 , 18 ]. Thus, the paper [ 17 ] presents general information on the phenomenon of the formation and development of voids in metals, together with a discussion of the basic, classical analytical models.…”

Section: Introductionmentioning

confidence: 96%

“…It is a continuation of the subject discussed in [ 17 , 18 ]. Thus, the paper [ 17 ] presents general information on the phenomenon of the formation and development of voids in metals, together with a discussion of the basic, classical analytical models. In turn, in [ 18 ], the results of the experimental research and in situ observation of the development of voids were characterised, including the use of modern research methods, such as microtomography.…”

Section: Introductionmentioning

confidence: 96%

Voids Development in Metals: Numerical Modelling

Wciślik

Lipiec

2023

Materials

Self Cite

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The article is a continuation of two previous review papers on the fracture mechanism of structural metals through the nucleation, growth and coalescence of voids. In the present paper, the literature on the numerical modelling of void nucleation and development has been reviewed. The scope of the work does not include porous material models and their numerical implementation. As part of the discussion on void initiation, nucleation around second phase particles and nucleation as an effect of the discontinuity of the crystal structure were discussed separately. The basic void cell models, finite element method (FEM) models of periodically distributed particles/voids and models based on the results of the observations of the actual microstructure of materials have been characterised. Basic issues related to the application of the cohesive approach in void nucleation modelling have been considered. A separate issue is the characteristics of atomistic simulations and peridynamic modelling, which have been developed in recent years. Numerical approaches to modelling the growth and coalescence of voids are described, with particular emphasis on the influence of the stress state and strain localisation. Basic conclusions from the simulation are presented, pointing to the contribution of FEM modelling to the understanding of microstructural phenomena leading to ductile fracture.

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“…[ 14,15 ] NMIs generally caused the stress concentration and formation of voids, and then became the crack initiation. [ 16–19 ]…”

Section: Introductionmentioning

confidence: 99%

“…[14,15] NMIs generally caused the stress concentration and formation of voids, and then became the crack initiation. [16][17][18][19] Many researchers have investigated the formation of voids near the NMIs in steel. Wang et al [20] observed the formation of voids on the interface between MnS inclusion and 304 stainless steel.…”

Section: Introductionmentioning

confidence: 99%

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.

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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.

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Some Microstructural Aspects of Ductile Fracture of Metals

Cited by 23 publications

References 113 publications

Three-Dimensional Smooth Particle Hydrodynamics Modeling and Experimental Analysis of the Ballistic Performance of Steel-Based FML Targets

Three-Dimensional Smooth Particle Hydrodynamics Modeling and Experimental Analysis of the Ballistic Performance of Steel-Based FML Targets

Voids Development in Metals: Numerical Modelling

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

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