Influence of carbide particles on crack initiation and propagation with competing ductile-brittle transition in ferritic steel

Giang, N.A.; Kuna, Meinhard; Hütter, Geralf

doi:10.1016/j.tafmec.2017.05.015

Cited by 33 publications

(14 citation statements)

References 39 publications

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“…The ratio σcM /σ0 is the ratio between matrix cohesive strength and matrix yield stress. Reprinted from Giang et al (2017), with permission from Elsevier.…”

Section: Resultsmentioning

confidence: 99%

“…It is now clear that cohesive elements can be used to study the fracture of heterogeneous materials but it is necessary to use this technique carefully since its drawbacks could lead to non physical results. Taking into account the advantages and drawbacks of CZM presented previously, CZMs have mainly been used for problems involving debonding between inclusions and the matrix (Liang and Sofronis (2003); Meng and Wang (2015); Giang et al (2017)), inclusions failure (Steglich et al (1999); Giang et al (2017)), and problems where the crack paths are prescribed (Giang et al (2017)). The previous cited works will be briefly discussed.…”

Section: Applications To Heterogeneous Materialsmentioning

confidence: 99%

“…An interesting contribution to micromechanical modeling using CZMs was proposed recently by Giang et al (2017). Ductile fracture was modeled at the scale of large 3D periodic arrays of inclusions.…”

Section: Applications To Heterogeneous Materialsmentioning

confidence: 99%

“…These results reveal a competition between particle debonding and fragmentation depending on material properties. Although these results are promising, Giang et al (2017) used an intrinsic method and had to define the crack path a priori both for particle fragmentation and matrix micro-cracking.…”

Section: Applications To Heterogeneous Materialsmentioning

confidence: 99%

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Computational Methods for Ductile Fracture Modeling at the Microscale

Shakoor

Navas

Muñoz

et al. 2018

Arch Computat Methods Eng

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This paper is a state-of-the-art review of computational damage and fracture mechanics methods applied to model ductile fracture at the microscale. An emphasis is made on robust and stable methods that can handle heterogeneous structures, large deformations, and cracks initiation and coalescence. Ductile materials' microstructures feature brittle and ductile components whose heterogeneous behavior can give raise to cracks initiation due to stress concentration. Due to large deformations, cracks initiated by brittle components failure transform into large voids. These major voids interact and coalesce by plastic localization within ductile components and lead to final failure. This process can involve minor voids nucleated directly within ductile components at sub-micron scales. State-of-the-art discontinuous approaches can be applied to discretize accurately brittle components and model their failure, given that large deformations can be handled. For ductile components, continuous approaches are discussed in this review as they can model the homogenized influence of minor voids, hence alleviating the burden and computational cost overhead that an explicit discretization of those voids would require. Close to final failure, when major voids are coalescing, and the influence of minor voids becomes compa-

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“…The ratio σcM /σ0 is the ratio between matrix cohesive strength and matrix yield stress. Reprinted from Giang et al (2017), with permission from Elsevier.…”

Section: Resultsmentioning

confidence: 99%

Section: Applications To Heterogeneous Materialsmentioning

confidence: 99%

Section: Applications To Heterogeneous Materialsmentioning

confidence: 99%

Section: Applications To Heterogeneous Materialsmentioning

confidence: 99%

See 2 more Smart Citations

Computational Methods for Ductile Fracture Modeling at the Microscale

Shakoor

Navas

Muñoz

et al. 2018

Arch Computat Methods Eng

View full text Add to dashboard Cite

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“…5 c. This is because that incorporating the second phase particles into the matrix of brittle ceramic materials can improve the fracture toughness of the ceramic coating. These particles dispersed in the coating effectively inhibited the initiation and propagation of micro-cracks [16]. Comparing Fig.…”

Section: Microstructure and Compositionmentioning

confidence: 91%

Microstructure and Tribological Properties of Micro-arc Oxidation TiO2 Coating Before and After SiC Particles Incorporation

Ren

Wang

Chen

et al. 2019

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In this work, porous TiO2 coating was fabricated on the surface of commercially pure titanium using the micro-arc oxidation (MAO) technique, and the effect of SiC particles incorporation on the microstructure and tribological properties of MAO TiO2 coating was investigated. Results show that submicron SiC particles dispersed in the MAO electrolyte were incorporated into the TiO2 coating during the MAO process and the fabricated TiO2/SiC composite coating mainly consisted of rutile, anatase and SiC phases. The pore size and surface roughness of TiO2/SiC composite coating decreased with the increasing addition amount of SiC particles in the electrolyte. Furthermore, the incorporation of SiC particles in the TiO2 coating suppressed the initiation and propagation of micro-cracks. The tribological test of coatings against GCr15 stainless steel balls show that the incorporation of submicron SiC particles in the MAO TiO2 coating decreased the friction coefficient and wear rate. DOI: http://dx.doi.org/10.5755/j01.ms.25.3.20089

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Tensile Deformation Behaviors and Damage Mechanisms of SRR99 Superalloy Bicrystals with Different Grain Boundary Misorientations

Zhu

Liu

et al. 2018

Adv Eng Mater

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To understand the intrinsic tensile influence mechanisms of grain boundary (GB) misorientations, SRR99 bicrystal superalloys with the different misorientation angles () of 4°, 10°, 16°, and 18° are prepared to carry out conventional and in situ tensile tests at room temperature and fracture feature analysis. With the increment of , tensile strength and elongation to fracture show successive decrement. The fracture features exhibit two types (4° and 10°–18°): (I) when equals to 4°, the cracks initiate and propagate along slip bands (SBs)‐matrix interface. (II) As ranges from 10° to 18°, the cracks initiate along the carbide–matrix interface at GBs. Interestingly, the main crack in 10° bicrystal propagates first along the GB then along the SB, but completely along the GB in 16°–18° bicrystals. The former one is absolutely controlled by SBs, and the latter is dominated by carbides and GBs. Finally, a new parameter, defined as the cracking threshold value (), is proposed to explain the tensile deformation behaviors and damage mechanisms. The new findings will beneficially provide research foundation for the further understanding fatigue damage mechanisms at high temperature.

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Influence of carbide particles on crack initiation and propagation with competing ductile-brittle transition in ferritic steel

Cited by 33 publications

References 39 publications

Computational Methods for Ductile Fracture Modeling at the Microscale

Computational Methods for Ductile Fracture Modeling at the Microscale

Microstructure and Tribological Properties of Micro-arc Oxidation TiO2 Coating Before and After SiC Particles Incorporation

Tensile Deformation Behaviors and Damage Mechanisms of SRR99 Superalloy Bicrystals with Different Grain Boundary Misorientations

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