Simulation of anisotropic load transfer and stress distribution in sicp/Al composites subjected to tensile loading

Zhang, J.F.; Zhang, X.X.; Wang, Q.Z.; Xiao, B.L.; Ma, Z.Y.

doi:10.1016/j.mechmat.2018.04.011

Cited by 48 publications

(8 citation statements)

References 36 publications

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“…Investigation on the load-bearing capability of particles is important to understand the strengthening effect of network architecture. Here, the stress concentration factor of SiC ( R SiC ) was utilized to quantitatively present load-bearing capability of particles 31,49,50 where V SiC and V Composite are volumes of SiC and total model, σ i is stress, and V i is volume in each element of particle or matrix. Figure 2(b) shows that shapes of these curves agree with the energy dispersive X-ray diffraction test result 51 and previous FEM simulation results.…”

Section: Resultsmentioning

confidence: 99%

Section: Strengthening Effect Induced By Network Architecturementioning

confidence: 99%

“…Figure 2(b) shows that shapes of these curves agree with the energy dispersive X-ray diffraction test result 51 and previous FEM simulation results. 49,50 Obviously, R SiC is closely related to particle shapes: the R SiC of network composites is higher than that of homogeneous one at strains near yield point. This explains the increased modulus and yield strength in network composite.…”

Section: Strengthening Effect Induced By Network Architecturementioning

confidence: 99%

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Enhanced stress concentration sensitivity of SiCp/Al composite with network architecture

Gao

Zhang

Qian

et al. 2022

Journal of Composite Materials

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For network architecture design, stress concentration sensitivity caused by particle shape may change, which is rarely studied. Here, the particle shape dependent stress concentration and its effect on the deformation, fracture and mechanical properties were investigated. Three particle shapes including hexahedron, twenty-six face polyhedron and sphere were utilized to generate different stress distribution states in the matrix. A numerical composite model showing network architecture (like grain boundary) was applied. A strong correlation between particle shape, stress concentration factor (RSiC) and mechanical properties of network composite was built. The particle shape affected the load-bearing capability due to the stress concentration state generated at particle edges. Near the yield point, hexahedron particle wall parallel to the load direction (PaW) was more effective in carrying loads (~1000 MPa) than that of twenty-six face polyhedron (750-1000 MPa) and sphere (600-1000 MPa) particles. In network composites reinforced by different shape particles, the main crack always initiated in perpendicular network walls (PeW), but propagated along different paths: in Al matrix for hexahedron particle, along macro-interface of SiC/Al–Al for twenty-six face polyhedron particle and in PeW for sphere particle. Such crack propagation manners contributed to the different elongations of network composites by various particle shapes: sphere > twenty-six face polyhedron > hexahedron particles. Selection of round particle and adjustment of local volume fraction improved elongation with a sacrifice of modulus and strength.

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Section: Resultsmentioning

confidence: 99%

Section: Strengthening Effect Induced By Network Architecturementioning

confidence: 99%

Section: Strengthening Effect Induced By Network Architecturementioning

confidence: 99%

See 1 more Smart Citation

Enhanced stress concentration sensitivity of SiCp/Al composite with network architecture

Gao

Zhang

Qian

et al. 2022

Journal of Composite Materials

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“…Roy [ 23 ] used the stress concentration factor to describe the inhomogeneous distribution of stress in matrix and reinforcement particles. Both the experiment [ 23 ] measured by energy dispersive X-ray diffraction and finite element method (FEM) simulation [ 24 , 25 , 26 ] indicate that the stress concentration factor of reinforcement increases in plastic stage and falls in failure stage. Meanwhile, the factor of composites with network structure is larger than that with homogeneous microstructure; it can transfer more load from the matrix to reinforcement particles.…”

Section: Discussionmentioning

confidence: 99%

Effect of Cold and Warm Rolling on the Particle Distribution and Tensile Properties of Heterogeneous Structured AlN/Al Nanocomposites

Song

Jin

et al. 2020

Materials

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Recently, heterogeneous structured metals have attracted extensive interest due to their exciting mechanical properties. In this work, an AlN/Al nanocomposite with heterogeneous distribution of AlN nanoparticles was successfully prepared by a liquid-solid reaction method combined with subsequent extrusion deformation, which behaves an excellent synergy of tensile strength and ductility. In order to further reveal the particle distribution evolution and the tensile property response during further deformation, a series of rolling treatments with different thickness reductions under room temperature and 300 °C was carried out. The results show that the yield strength and tensile strength of the composites increase significantly from 238 MPa, 312 MPa to 312 MPa, 360 MPa after 85% rolling reduction at 300 °C. While the elongation decreased from 15.5% to 9.8%. It is also noticed that the elongation and tensile strength of the nanocomposites increases simultaneously with increasing deformation. It is considered that the aluminum matrix strengthening effect accounts for the strength enhancement. The AlN spatial distribution in the matrix becomes more homogeneous gradually during the rolling, which is supposed to reduce the stress concentration between the particle and matrix and then promote the ductility increase.

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“…In [16], the effect of the composite's two-dimensional structure with polyhedral particles on the local characteristics of temperature distributions under thermal loading is discussed. 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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Simulation of anisotropic load transfer and stress distribution in sicp/Al composites subjected to tensile loading

Cited by 48 publications

References 36 publications

Enhanced stress concentration sensitivity of SiCp/Al composite with network architecture

Enhanced stress concentration sensitivity of SiCp/Al composite with network architecture

Effect of Cold and Warm Rolling on the Particle Distribution and Tensile Properties of Heterogeneous Structured AlN/Al Nanocomposites

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

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