Achieving high hetero-deformation induced (HDI) strengthening and hardening in brass by dual heterostructures

Fang, Xiaotian; Li, Z.K.; Wang, Y.F.; Ruiz, M.; Ma, Xiaolong; Wang, H.Y.; Schoell, Ryan; Zheng, Ce; Kaoumi, Djamel; Zhu, Yuntian

doi:10.1016/j.jmst.2021.03.088

Cited by 59 publications

(2 citation statements)

References 30 publications

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“…HS metals and alloys can obtain a combination of high strength and good ductility. , HS materials have superior mechanical or physical properties that traditional homogeneous materials cannot achieve. The introduction of heterostructures in metal matrix composites has resulted in excellent mechanical properties of metals and alloys, mainly due to heterodeformation-induced (HDI) strengthening and heterodeformation-induced work hardening, − which are based on traditional dislocation strengthening, providing additional strength and ductility. More importantly, the heterostructure is controllable and scalable and can be manufactured at low cost using existing industrial facilities, making it easier to commercialize than other advanced materials.…”

Section: Introductionmentioning

confidence: 99%

The Optimum Grain Size of Nanocrystalline CuNi Alloy with Grain Boundary Segregation Structure

Chen

2023

Crystal Growth & Design

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Grain boundary segregation engineering can control the material properties by designing and changing the nonuniform distribution of solute elements in the alloy. The introduction of solute segregation in gradient nanocrystalline alloys can induce a secondary improvement in the mechanical properties. In our contribution, grain boundary segregation structures are designed in different gradient grain nanocrystals to enhance the mechanical properties of the alloy, and the effect of the change of gradient ratio on the mechanical behavior is observed. The results show that changing the gradient ratio of the alloy will affect the mechanical properties and deformation mechanism. There is an optimal gradient ratio which makes the yield strength and average flow stress of the nanocrystalline CuNi alloy reach the highest value of 1.7 and 1.8 GPa, respectively. In the optimal gradient ratio alloy, the dislocation density and the number of deformation twins reach the maximum, which are coupled with the grain boundary strengthening induced by grain boundary segregation, resulting in the superimposed strengthening effect of dislocation strengthening, grain boundary strengthening, and twin strengthening.

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Section: Introductionmentioning

confidence: 99%

The Optimum Grain Size of Nanocrystalline CuNi Alloy with Grain Boundary Segregation Structure

Chen

2023

Crystal Growth & Design

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“…The heterogeneous interface often exhibits considerable compositional and microstructural gradients, resulting in distinctive mechanical properties. Fang et al [19] designed a dual heterostructure brass that overcame the strength-ductility trade-off and possessed a superior combination of strength and ductility. This comprehensive strengthening effect was attributed to the generation of geometrically necessary dislocations (GNDs) at the heterogeneous interface during plastic deformation [20].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Microstructure and Mechanical Properties of the Repaired Precipitation-Strengthened Ni-Based Superalloy via Laser Melting Deposition

Yan,

Xue,

et al. 2023

Metals

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In this study, a typical γ′ phase precipitation-strengthened Ni-based superalloy DZ411 was repaired using an LMD-based repairing technique with an IN738LC superalloy, and crack-free samples were acquired. The mechanical properties and microstructure of different areas inside the repair sample were investigated, including the IN738LC deposit, the DZ411 substrate, and the interface between these two parts. The differences in mechanical properties between different areas were explained via analyzing fractography and KAM maps. It was found that the coarse carbides of the DZ411 substrate might lead to rapid cracking of grain boundaries, resulting in the worst mechanical properties of the DZ411 substrate. The IN738LC deposit demonstrated significantly superior mechanical properties in comparison to the DZ411 substrate. Its tensile strength exceeded that of the substrate by over 250 MPa, while its relative elongation after fracture was twice as great as that of the substrate. The excellent mechanical properties of the IN738LC deposit could be attributed to its fine microstructure, which resisted rapid cracking and generated a large number of GNDs during the plastic deformation process. For the interface between the deposit and substrate, although its hardness before the tensile test was low, it could also generate many GNDs during the plastic deformation process, hence exhibiting commendable mechanical properties. The research results show that using an LMD-based repairing technique with IN738LC superalloy to repair γ′ phase precipitation-strengthened Ni-based superalloy DZ411 is a feasible solution.

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Heterostructured Metallic Structural Materials: Research Methods, Properties, and Future Perspectives

Dong,

Gao,

Xiao

et al. 2024

Adv Funct Materials

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Heterostructured (HS) materials, characterized by heterogeneous zones with differences in mechanical or physical properties, represent a revolutionary advancement in material science. During deformation, hetero‐deformation‐induced (HDI) stress forms due to the synergistic interactions between soft and hard zones, leading to remarkable HDI strengthening and strain hardening. This mechanism significantly enhances their performance, surpassing that of traditional homogeneous materials. This review delves into the classification, preparation techniques, fundamental deformation mechanisms, and research methods of HS materials. It outlines the preparation methods of various HS materials, emphasizing their unique characteristics and applications. The review elaborates on the fundamental deformation mechanisms of HS materials, focusing on non‐uniform plastic deformation behavior and HDI strain hardening. Furthermore, it explores the application of heterogeneous design concepts in materials, analyzing their microstructure tuning mechanisms and mechanical properties. This review aims to serve as a critical reference for the future design and development of new HS metallic structural materials, paving the way for innovations that can transform multiple industries. By highlighting the long‐term impact, this review not only enhances the understanding of HS materials but also provides a roadmap for future research and industrial applications, positioning HS materials as key players in the advancement of material technology.

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Achieving high hetero-deformation induced (HDI) strengthening and hardening in brass by dual heterostructures

Cited by 59 publications

References 30 publications

The Optimum Grain Size of Nanocrystalline CuNi Alloy with Grain Boundary Segregation Structure

The Optimum Grain Size of Nanocrystalline CuNi Alloy with Grain Boundary Segregation Structure

Investigation of Microstructure and Mechanical Properties of the Repaired Precipitation-Strengthened Ni-Based Superalloy via Laser Melting Deposition

Heterostructured Metallic Structural Materials: Research Methods, Properties, and Future Perspectives

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