Multilayer Maraging/CoCrNi Composites With Synergistic Strengthening-Toughening Behavior

Chen, C. X.; Ge, Y. F.; Fang, Wei; Zhang, X.; Liu, B. X.; Feng, Jianhang; Yin, Fuxing

doi:10.3389/fmats.2020.619315

Cited by 4 publications

(6 citation statements)

References 28 publications

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“…In order to deeply analyze the contribution of each reinforcement, related theoretical calculations were introduced. The yield strength can be calculated according to the following equation [27]: σ 0.2 = σ 0 + ∆σ refin + ∆σ twin (6) where σ 0 is the contribution of the original material to the yield strength; ∆σ refin is the value of grain refining; and ∆σ twin is the value of strain-induced twinning.…”

Section: Discussionmentioning

confidence: 99%

Interface Strengthening and Toughening Mechanism of Hot Rolled Multilayer TWIP/40Si2CrMo Steels

Dong

Liu

et al. 2022

Crystals

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Layered metal composites play an increasingly important role in aerospace, automotive, and nuclear energy. Compared with a single metal or alloy, the layered metal composite exhibits an excellent strong-plastic matching effect. In this paper, multilayer TWIP/40Si2CrMo steels with different hot rolling reductions were successfully fabricated by the vacuum hot rolling. The results show that the multilayer steels can improve the lower yield strength of TWIP steel and lower the fracture elongation of 40Si2CrMo steel. In addition, with the increase of the hot rolling reduction, the mechanical properties and interfacial bonding strength of multilayer steels were improved, while the size and number of interfacial oxides decrease, and the fracture mode was also changed. This shows that a higher hot rolling reduction will promote the breakage of the interface oxides and make them appear dispersed, thereby improving the bonding strength of the interface, effectively suppressing the delamination and local necking of the multilayer steel, and making the multilayer steel show a higher ability of uniform plastic deformation. At the same time, under the dual action of layer thickness scale and interface strengthening effect, the brittle layer of multilayer steel presents a multiple tunnel crack mode. It was beneficial to alleviate the stress concentration and further improve the strengthening and toughening effect of multilayer steel.

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Section: Discussionmentioning

confidence: 99%

Interface Strengthening and Toughening Mechanism of Hot Rolled Multilayer TWIP/40Si2CrMo Steels

Dong

Liu

et al. 2022

Crystals

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Section: Introductionmentioning

confidence: 99%

“…Multilayer metal composites have excellent properties, such as wear resistance and synergistic strengthening and toughening behavior [20,21]. With a high fracture elongation of 24%, these composites' ultimate tensile strength can reach 1380 MPa [20]. The unique properties exhibited by high-performance NMMCs are primarily attributed to the interface between the different metallic layers.…”

Section: Introductionmentioning

confidence: 99%

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High-Performance Nanoscale Metallic Multilayer Composites: Techniques, Mechanical Properties and Applications

Ebrahimi,

Luo,

Wang

et al. 2024

Materials

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Due to their exceptional properties and diverse applications, including to magnetic devices, thermoelectric materials, catalysis, biomedicine, and energy storage, nanoscale metallic multilayer composites (NMMCs) have recently attracted great attention. The alternating layers of two or more metals that make up NMMCs are each just a few nanometers thick. The difficulties in producing and synthesizing new materials can be overcome by using nanoscale multilayer architectures. By adjusting the layer thickness, composition, and interface structure, the mechanical properties of these materials can be controlled. In addition, NMMCs exhibit unusually high strength at thin layer thicknesses because the multilayers have exceptionally high strength, as the individual layer thicknesses are reduced to the nanoscale. The properties of NMMCs depend on the individual layers. This means that the properties can be tuned by varying the layer thickness, composition, and interface structure. Therefore, this review article aims to provide a comprehensive overview of the mechanical properties and the application of high-performance NMMCs. The paper briefly discusses the fabrication methods used to produce these composites and highlights their potential in various fields, such as electronics, energy storage, aerospace, and biomedical engineering. Furthermore, the electrical conductivity, mechanical properties, and thermal stability of the above composite materials are analyzed in detail. The review concludes with a discussion of the future prospects and challenges associated with the development of NMMCs.

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“…One of the most characteristic cases is that of equiatomic CrCoNi solid solution alloys, that show higher yield strengths than traditional alloys, as well as more complex Cantor CrMnFeCoNi high entropy alloys at cryogenic and room temperatures Esfandiarpour et al (2022); Wu et al (2014). Deformation twins (especially at cryogenic temperature) Chen et al (2021a) and larger atomistic mismatch (larger lattice distortion), induced by Cr atoms, are the main explanation for the exceptional behavior of CrCoNi solid solutions Varvenne et al (2016). We propose that the design of new MEAs that have higher strength than CrCoNi, it is imperative to add elements that can induce higher local lattice distortion.…”

Section: Introductionmentioning

confidence: 99%

Atomistic simulations of dislocation plasticity in concentrated VCoNi medium entropy alloys: Effects of lattice distortion and short range order

Esfandiarpour

Alvarez-Donado²,

Papanikolaou³

et al. 2022

Front. Mater.

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Face-centered cubic (fcc) high and medium entropy alloys (H/MEAs) have been shown to display superior mechanical properties at low temperatures, but significant improvement of their strength at high temperatures is required for industrial applications at extreme conditions. Recently, it has been shown that the breakthrough of the MEAs from equiatomic/near-equiatomic to non-equiatomic ratios leads to strong MEAs with good ductility. To design new H/MEAs, we consider two important factors that may influence strength: the chemical composition and chemical short range order (CSRO). In this study, we investigate the depinning stress (σc) as a criterion of strength of several compositions of VCoNi concentrated solid solution alloys (CSSAs) including V0.33Co0.33Ni0.33, V0.35Co0.2Ni0.45, V0.33Co0.17Ni0.5, and V0.17Co0.33Ni0.5 at 5 K and 300 K, using atomistic simulations. The chosen interatomic potential is shown to be reliable by comparing experimental/ab initio values and calculated parameters such as lattice constant, shear modulus, depinning stress, and temperature variation of stacking fault width for equimolar VCoNi. We find a good agreement between experimental friction stress and the depinning stress extracted from our results for equimolar VCoNi. Also, we find that Vclusters are the main pinning points of dislocations, and With a random distribution of atoms, we find that the alloy composition V0.33Co0.17Ni0.5 displays the largest depinning stress at both 5 and 300 K. Furthermore, to investigate how CSRO affects the strength of these alloys, we design CSRO into the microstructure using two different methods: In the first method, hybrid Molecular-dynamics/Monte-Carlo simulations were employed to simulate annealing at various temperatures. We observe that such simulations create CSRO so that it increases with decreasing annealing temperature. Recently, the CSRO motif and its concentration in an equimolar VCoNi have been determined by experiment. By modeling this experiment, we also implemented the CSRO into microstructure as the second method. By using both methods, the effect of CSRO on the magnitude of the depinning stress is discussed. It was shown that in both methods, CSRO significantly influences the strength of non-equimolar VCoNi alloys.

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Multilayer Maraging/CoCrNi Composites With Synergistic Strengthening-Toughening Behavior

Cited by 4 publications

References 28 publications

Interface Strengthening and Toughening Mechanism of Hot Rolled Multilayer TWIP/40Si2CrMo Steels

Interface Strengthening and Toughening Mechanism of Hot Rolled Multilayer TWIP/40Si2CrMo Steels

High-Performance Nanoscale Metallic Multilayer Composites: Techniques, Mechanical Properties and Applications

Atomistic simulations of dislocation plasticity in concentrated VCoNi medium entropy alloys: Effects of lattice distortion and short range order

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