Enhancing strength and ductility synergy through heterogeneous structure design in nanoscale Al2O3 particulate reinforced Al composites

Zan, Y.N.; Zhou, Yangtao; Liu, Z.Y.; Ma, Guojun; Wang, D.; Wang, Q.Z.; Wang, W.G.; Xiao, B.L.; Ma, Z.Y.

doi:10.1016/j.matdes.2019.107629

Cited by 103 publications

(21 citation statements)

References 37 publications

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“…It was also reported that more energy would be dissipated during the crack propagation when lamellar ductile domains were used. Stronger back-stress work hardening and more energy dissipation during tensile tests were conducive to higher strength and ductility [17]. For heterogeneous lamella structures consisting of domains with different strengths, the soft layers (matrix layers) can possess similar strength with the hard layers (TiC p layers) due to the accumulation of geometrically necessary dislocations (GNDs) in the soft layers during deformation, and the global yield strength can be even higher than that obtained in the uniform grain structure [17,18].…”

Section: Discussionmentioning

confidence: 99%

“…Stronger back-stress work hardening and more energy dissipation during tensile tests were conducive to higher strength and ductility [17]. For heterogeneous lamella structures consisting of domains with different strengths, the soft layers (matrix layers) can possess similar strength with the hard layers (TiC p layers) due to the accumulation of geometrically necessary dislocations (GNDs) in the soft layers during deformation, and the global yield strength can be even higher than that obtained in the uniform grain structure [17,18]. The heterogeneous structure is observed to produce an intrinsic synergetic strengthening, with its tensile strength much higher than that calculated by the rule of the mixture from separate layers, which is attributed to the macroscopic stress gradient and plastic incompatibility between layers [26,27].…”

Section: Discussionmentioning

confidence: 99%

“…The repetitive rolling cycle of ARB makes it possible to obtain the samples with tailored properties depending on the sandwich-like structure or reinforcements (fibers, foils or particles) [14][15][16]. In the lamella structure, the soft layer could possess similar strength with the hard layer due to the accumulation of geometrically necessary dislocations in the soft layer during deformation [17,18]. The combination of soft and hard layers is expected to provide an efficient improvement on strength with less reduction of ductility [19].…”

Section: Introductionmentioning

confidence: 99%

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Simultaneously increased strength and ductility via the hierarchically heterogeneous structure of Al-Mg-Si alloys/nanocomposite

Geng

Zhao

Qiu

et al. 2020

Materials Research Letters

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The increase in strength usually accompanies with ductility loss in structural materials. We proposed a novel approach to the design and fabrication of hierarchically structured Al-Mg-Si alloys/nanocomposites with improved strength and ductility. The layered distribution of TiC nanoparticles (TiC p), bimodal-sized grains and precipitates were produced in a laminated composite composed of Al-Mg-Si matrix alloy and TiC p /Al-Mg-Si composite by accumulative roll bonding (ARB), increasing yield strength from 380 MPa to 443 MPa with a uniform elongation from 5.0% to 6.4%, compared to the ARB TiC p /Al-Mg-Si composite. This work provides a new strategy for producing high strength composite sheets for industrial applications. IMPACT STATEMENT A hierarchical structure with the layered distribution of nanosized TiC particles (TiC p) was obtained through the master alloy-casting process and accumulative roll bonding process. Significant improvement in strength was obtained with no loss in ductility.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Simultaneously increased strength and ductility via the hierarchically heterogeneous structure of Al-Mg-Si alloys/nanocomposite

Geng

Zhao

Qiu

et al. 2020

Materials Research Letters

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“…And it is suitable for nearly all kinds of metallic materials. Successful examples have already been reported in Al [39][40][41], Mo [42] and steel [43][44][45], Mg [46], Cu [47], CoCrFeN-iMn high entropy alloys [48], etc. The key to fully develop this unique strategy relies on the methods to introducing nano-dispersoids.…”

Section: Strategies To Improve the Ductility Of Ufg/ng Materialsmentioning

confidence: 99%

Simultaneous enhancement of strength and ductility with nano dispersoids in nano and ultrafine grain metals: a brief review

Hu¹,

Fan

et al. 2020

Reviews on Advanced Materials Science

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Grain refinement is the most universal and effective method of strengthening metallic materials, which is known as the “Hall-Petch” relationship. However, when grain size is refined to sub-micro regime (Ultrafine Grain, UFG) or even nano regime (Nano Grain, NG), the plasticity of metallic materials becomes poor. Massive studies indicate that the low strain hardening ability resulted from the enhanced dynamic recovery and lack of dislocation accumulation in fine grains is the main reason for low ductility in UFG/NG metals. To resolve this “strength-ductility” conflict, different strategies have been taken, like bimodal/multimodal structure, nanotwins, gradient structure and intragranular nano dispersoids. Among them, the introduction of nano dispersoids into the fine grains attracted lots of attention due to its wide applicability and great success in simultaneously increasing the strength and ductility of the UFG/NG metal. In addition to the enhanced mechanical performance, the introduced second-phase particle may also bring some extraordinary functional properties into the metallic material. In this paper, a brief view of the strategies to improve ductility of the UFG/NG metals and the relevant toughening mechanisms are revealed. Special attentions are paid to the utilization of intragranular nano dispersoids in Aluminum alloys.

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“…The hard and brittle ceramic particles in the matrix alloy allow the aluminum matrix composites a good combination of high specific strength, high specific modulus and good wear resistance [1]. Ceramic particles, such as SiC [2], TiC [3] and Al 2 O 3 [4] so on, have been widely used. However, defects, such as agglomeration, porosity and insufficient interfacial bonding, occur due to the poor wettability between the ceramics and the matrix, which severely limits their engineering application.…”

Section: Introductionmentioning

confidence: 99%

Interface Structure and Mechanical Properties of 7075Al Hybrid Composite Reinforced with Micron Ti Metal Particles Using Pressure Infiltration

Liu

Zheng

Cao

et al. 2019

Metals

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Micron Ti metal particles were incorporated into SiCp/7075Al composites using pressure infiltration. The interface structure between the Ti metal particles and the matrix during the casting processes were investigated. Results show that the dispersed unreacted Ti particles form mutual diffusion layer at the interface without the formation of low-temperature intermetallic phases during the solidification processes. The interaction between the micron Ti and the molten aluminum alloy is subject to the mutual diffusion coefficient of Ti–Al rather than the reaction activation energy. The tensile strength and plasticity of the composite were improved simultaneously due to the high interfacial bonding strength and released thermal misfit stress cause by the incorporated Ti metal particles.

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Enhancing strength and ductility synergy through heterogeneous structure design in nanoscale Al2O3 particulate reinforced Al composites

Cited by 103 publications

References 37 publications

Simultaneously increased strength and ductility via the hierarchically heterogeneous structure of Al-Mg-Si alloys/nanocomposite

Simultaneously increased strength and ductility via the hierarchically heterogeneous structure of Al-Mg-Si alloys/nanocomposite

Simultaneous enhancement of strength and ductility with nano dispersoids in nano and ultrafine grain metals: a brief review

Interface Structure and Mechanical Properties of 7075Al Hybrid Composite Reinforced with Micron Ti Metal Particles Using Pressure Infiltration

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