Formation of Bulk Tensile Regions in Metal Matrix Composites and
Coatings under Uniaxial and Multiaxial Compression

Балохонов, Р. Р.; Evtushenko, E. P.; Романова, В. А.; Schwab, E. A.; Бакеев, Р. А.; Emelyanova, E. S.; Zinovyeva, O. S.; Zinovyev, Alexey; Sergeev, M. V.

doi:10.1134/s1029959920020058

Cited by 20 publications

(3 citation statements)

References 24 publications

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“…Note also that the result obtained correlates with the discussion in [30,31] of the features of shaping prows/wedges in a variety of materials. Indeed, as shown in this work, the linear dimensions and stability (duration) of the existence of prows/wedges in friction pairs are largely determined by the mechanical parameters of the materials, first of all, by the hardness, which is largely determined by the yield point.…”

Section: Role Of the Mechanical Characteristics Of The Matrix In The Friction Of MMCsupporting

confidence: 85%

Friction Behavior of Aluminum Bronze Reinforced by Boron Carbide Particles

2021

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A promising composite material for tribotechnical applications based on aluminum bronze with reinforcing boron carbide particles fabricated by a special electron beam additive deposition technique was studied experimentally and numerically. Tribological experiments showed that reinforcing by carbide particles allowed reducing the coefficient of friction from 0.26 to 0.19 and improving the wear resistance by 2.2 times. Computer modeling reveals two main factors playing a significant role in the friction behavior of the studied metal matrix composite: the mechanical effect of reinforcing ceramic inclusions and effective hardening of the metal matrix due to the peculiarities of the 3D electron beam printing. The mechanical effect of hardening inclusions determines a more rounded shape of wear particles, preventing wedging, and thereby increasing the stability of friction. Strengthening the metal matrix leads to reducing the number of wear particles.

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Section: Role Of the Mechanical Characteristics Of The Matrix In The Friction Of MMCsupporting

confidence: 85%

Friction Behavior of Aluminum Bronze Reinforced by Boron Carbide Particles

2021

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“…Meaningful simulation of the composite's strain and damage in a three-dimensional structure with a few particles of regular polyhedral shapes is carried out in [17], without including any residual stresses, while in [18] effective elastic moduli and the coefficient of thermal expansion for the aluminum matrix reinforced by the particles of equal icosahedral shapes and sizes are predicted. Plastic strain localization and fracture across multiple spatial scales in metal-matrix composite and coated materials are investigated by solving two- [19][20][21] and three-dimensional [22] problems without taking into consideration cooling-induced RSs, while in [21] the 3D numerical analysis of the residual stress formation under cooling is performed.…”

Section: Introductionmentioning

confidence: 99%

Computational Microstructure-Based Analysis of Residual Stress Evolution in Metal-Matrix Composite Materials During Thermomechanical Loading

Балохонов

Романова²,

Schwab³

et al. 2021

FU Mech Eng

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A technique for computer simulation of three-dimensional structures of materials with reinforcing particles of complex irregular shapes observed in the experiments is proposed, which assumes scale invariance of the natural mechanical fragmentation. Two-phase structures of metal-matrix composites and coatings of different spatial scales are created, with the particles randomly distributed over the matrix and coating computational domains. Using the titanium carbide reinforcing particle embedded into the aluminum as an example, plastic strain localization and residual stress formation along the matrix-particle interface are numerically investigated during cooling followed by compression or tension of the composite. A detailed analysis is performed to evaluate the residual stress concentration in local regions of bulk tension formed under all-round and uniaxial compression of the composite due to the concave and convex interfacial asperities.

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“…Каждая частица вносит свой вклад в общее напряженно-деформированное состояние в мезо-объеме композита. Ранее было показано, что на уровне дисперсно-упрочненного металлокерамического композиционного материала происходит разрушение нескольких частиц, а процессы локализации деформации в алюминиевой матрице и разрушения керамических частиц происходят взаимосвязанно и согласованно[20]. Общая система уравнений механики сплошной среды, включающая законы сохранения массы, количества движения, энергии, соотношения для деформаций, решается в двумерной постановке методом конечных элементов.Для алюминиевой матрицы и частиц карбида бора используются изотропные упруго-пластическая и упруго-хрупкая модели соответственно.…”

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The Influence of the Volume Fraction of Ceramic Particles on the Plastic Strain Localization and Fracture of Metal Matrix Composites. Computational Analysis

Zemlianov¹,

Gatiyatullina²,

Балохонов³

2022

Известия АлтГУ

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In this paper, the mechanical behavior of the metal matrix composite under the action of different thermomechanical loading is investigated. The inhomogeneous structure of composites is explicitly considered in the calculations. Isotropic elastoplastic and elastic-brittle constitutive models are used to describe the mechanical response of the aluminum matrix and ceramic particles, respectively. A representative volume of the composite material containing several boron carbide particles located in the microvolume of aluminum alloy 6061T6 is considered. Two structures are created with different volume fractions of ceramic particles. It is found that the strength of the structure with lower volume fraction of particles is higher than the strength of the structure with larger volume fraction. Two types of problems are solved: 1) tension with considering residual stresses, and 2) tension without considering residual stresses. The Duhamel-Neumann relations are used to take into account residual stresses in the calculations. The influence of residual stresses on the fracture of particles in mesovolumes is investigated. Dynamic boundary value problems are solved by the finite element method in the ABAQUS / Explicit software package.

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Formation of Bulk Tensile Regions in Metal Matrix Composites and Coatings under Uniaxial and Multiaxial Compression

Cited by 20 publications

References 24 publications

Friction Behavior of Aluminum Bronze Reinforced by Boron Carbide Particles

Friction Behavior of Aluminum Bronze Reinforced by Boron Carbide Particles

Computational Microstructure-Based Analysis of Residual Stress Evolution in Metal-Matrix Composite Materials During Thermomechanical Loading

The Influence of the Volume Fraction of Ceramic Particles on the Plastic Strain Localization and Fracture of Metal Matrix Composites. Computational Analysis

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