Synergistic strengthening of Al–SiC composites by nano-spaced SiC-nanowires and the induced high-density stacking faults

Wu, Yiming; Zhou, Chang; Wu, Rui; Sun, Lixin; Lu, Chenyang; Xiao, Yunzhen; Su, Zhengxiong; Gong, Mingyu; Ming, Kaisheng; liu, Kai; Gu, Chao; Yang, Wenshu; Wang, Jian; Wu, Guanglei

doi:10.1016/j.compositesb.2022.110458

Cited by 16 publications

(5 citation statements)

References 47 publications

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“…Moreover, deformation twinning is observed away from the crack region (see Figure 4c), activating a more intricate deformation mechanism characterized by fine dislocation behavior. The previous experimental work demonstrates high-density stacking faults and twinning formed in aluminum alloys [41][42][43], consistent with the atomic simulation results (Figure 4b,c).…”

Section: Corrosion Depthsupporting

confidence: 90%

“…The accumulation of a significant number of dislocations near the crack tip results in the formation of a dis tinct plastic region, with two distinct dislocation channel regions present at the crack tip These channels create a clear shear band, inducing local deformation similar to the tradi tional crack propagation path and facilitating the transition from brittle to ductile fracture Moreover, deformation twinning is observed away from the crack region (see Figure 4c) activating a more intricate deformation mechanism characterized by fine dislocation be havior. The previous experimental work demonstrates high-density stacking faults and twinning formed in aluminum alloys [41][42][43], consistent with the atomic simulation re sults (Figure 4b,c). Figure 5 displays the microstructure near the crack with varying depths of corrosion In the absence of corrosion, cracks typically propagate in a single direction, with amorphous regions forming at the crack tip.…”

Section: Corrosion Depthsupporting

confidence: 89%

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Revealing Crack Propagation and Mechanical Behavior of Corroded Aluminum Alloys

Zhang,

Wang,

Fang

et al. 2024

Symmetry

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The mechanical properties and crack propagation behavior of aluminum alloys, both with and without corroded surfaces, were thoroughly investigated through molecular dynamic (MD) simulations. The study delved into the effects of corrosion depth and width on the mechanical properties of corroded aluminum alloys. It was found that as the corrosion depth increases, the yield strength experiences an initial decrease followed by a subsequent increase. This can be attributed to the impact of increased corrosion depth on the healing of surface roughness, which ultimately leads to significant changes in yield strength. Furthermore, the presence of corrosion pits was identified as a key factor in regulating the local microstructure evolution within the material, leading to pronounced differences in stress distribution localization. This, in turn, influenced the path of crack propagation within the material. These findings not only contribute to a deeper understanding of the behavior of aluminum alloys under corrosion, but also provide valuable insights for the development of aluminum alloys with enhanced mechanical properties.

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Section: Corrosion Depthsupporting

confidence: 90%

Section: Corrosion Depthsupporting

confidence: 89%

Revealing Crack Propagation and Mechanical Behavior of Corroded Aluminum Alloys

Zhang,

Wang,

Fang

et al. 2024

Symmetry

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“…Materials with high mechanical strength, toughness, or crack resistance attract intense interest in fabricating many crucial components of some fields such as biomedicine. [1][2][3][4] However, these high-performance mechanical properties may seem to be antagonistic to each other in most synthetic materials. [5][6][7] Nature has provided numerous biological structures which were regarded as abundant design resources to solve engineering and scientific DOI: 10.1002/marc.202300526 challenges.…”

Section: Introductionmentioning

confidence: 99%

Transparent and Soft Crack‐Resistant Bouligand Elastomers Inspired by Fish Scales

Shu,

Teng,

Zhang

et al. 2023

Macromol. Rapid Commun.

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Nature with its abundant source offers numerous inspirations for structural and engineering designs. The oriented membranes stacked with bouligand structures in the fish scales show an outstanding combination of high strength and crack‐resistance. Although the applications of hard biomimetic composites have been reported, the structures have not been utilized in soft materials. Inspired by the scales of various fishes, we use and stack electrospun membranes to fabricate bouligand elastomers, including orthogonal‐plywood, single‐bouligand, and double‐bouligand structures. We systematically investigated the effects of different structures on the properties of elastomers and explained possible mechanism using finite element analysis. The stiffness and fatigue characteristics of these biomimetic elastomers with the above structures were improved compared with the original membranes, especially the elastomers with a single‐bouligand structure, which can undergo 5000 cycles at a maximum strain of 35% without complete failure. The crack only propagates to half of the width of the elastomer with a remaining strength of 50% of its original strength. Moreover, the mechanical performance can be adjusted by regulating the proportion of the components. The excellent crack‐resistant properties and transparency promote its various potential applications.This article is protected by copyright. All rights reserved

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“…Particle-reinforced metal matrix composites (PRMMCs) are commonly used in aerospace and new energy vehicles due to their high modulus, strength, light density, and fatigue resistance compared to traditional alloys [1][2][3][4]. Various ceramic reinforcements have been added to the development of composites, including Al 2 O 3 , SiC, TiB 2 and Al 3 Ti [5][6][7][8][9]. Among them, SiC particles have attracted widespread attention in industries because of their high elastic modulus, low cost, and excellent resistance to corrosion [10,11].…”

Section: Introductionmentioning

confidence: 99%

Hot Deformation Behavior and Mechanisms of SiC Particle Reinforced Al-Zn-Mg-Cu Alloy Matrix Composites

Diao,

Fan,

Yang

et al. 2023

Materials

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A systematic and comprehensive analysis of the hot deformation and mechanisms of SiC particle-reinforced aluminum matrix composites is significant for optimizing the processing of the composites and obtaining the desired components. Based on this, related research on 11 vol% SiCp particle-reinforced 7050Al matrix composites was carried out. Hot compression experiments were carried out on the Gleeble-3500 thermal simulator to study the hot deformation behavior of composites at the temperature of 370–520 °C and strain rate of 0.001–10 s−1. The hyperbolic sine constitutive equation of the material was established, and the processing map was calculated. Combining the typical metallograph and misorientation angle distribution, the microstructure evolution mechanism of composites was analyzed, and the effect of particles on recrystallization behavior was investigated. Under certain process conditions, the dominant deformation mechanism of composites changed from dynamic recovery (DRV) to dynamic recrystallization (DRX), and the grain boundary sliding mechanism began to play a role. In addition, high temperature tensile and elongation at break were tested, and it was found that the dominant form of fracture failure changed from brittle fracture of the particles to ductile fracture of the matrix as the temperature increased.

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Synergistic strengthening of Al–SiC composites by nano-spaced SiC-nanowires and the induced high-density stacking faults

Cited by 16 publications

References 47 publications

Revealing Crack Propagation and Mechanical Behavior of Corroded Aluminum Alloys

Revealing Crack Propagation and Mechanical Behavior of Corroded Aluminum Alloys

Transparent and Soft Crack‐Resistant Bouligand Elastomers Inspired by Fish Scales

Hot Deformation Behavior and Mechanisms of SiC Particle Reinforced Al-Zn-Mg-Cu Alloy Matrix Composites

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