Combining synergetic effects of gradient nanotwins and nanoprecipitates in heterogeneous bronze alloy

Shi, Rongjian; Fu, Hui; Chen, Kaixuan; Sun, Wanting; Wang, Zidong; Qiao, Lijie; Yang, Xinwei; Pang, Xiaolu

doi:10.1016/j.actamat.2022.117831

Cited by 31 publications

(7 citation statements)

References 86 publications

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“…For instance, the synergetic strengthening effects of gradient nanotwins and nanoprecipitates were combined to enhance the strength−ductility synergy and work hardening capacity of a bronze alloy. 211 Compared with the original uniform structure, the yield strength and uniform elongation of GNT structure alone change from 180 to 216 MPa and 9.5% to 4.5%, respectively. In contrast, when combining the GNT and nanoprecipitates, both the yield strength and uniform elongation further increase to 290 MPa and 7.4%, respectively.…”

Section: Gradient Nanotwinned Structuresmentioning

confidence: 96%

“…The GNT architecture can be combined with other advanced strategies. For instance, the synergetic strengthening effects of gradient nanotwins and nanoprecipitates were combined to enhance the strength–ductility synergy and work hardening capacity of a bronze alloy . Compared with the original uniform structure, the yield strength and uniform elongation of GNT structure alone change from 180 to 216 MPa and 9.5% to 4.5%, respectively.…”

Section: Nanotwinned Structuresmentioning

confidence: 99%

“…To date, the CNP strengthening strategy has been applied to Mg alloys, Al alloys, medium-entropy alloys, HEAs, and maraging steels to realize strength−ductility synergy. 26,204−208 In addition, the CNP strengthening strategy can be combined with heterogeneous structure strategy, e.g., the use of a bimodal structure with both coarse grains and UFGs, 209,210 and gradient structure, 211 to accomplish superior mechanical properties. Serval types of bifunctional nanoprecipitates have been recently developed to realize a high strength−high ductility synergy.…”

Section: Strength−ductility Synergy By Coherent Nanoprecipitates (Cnps)mentioning

confidence: 99%

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Phase Engineering of Nanostructural Metallic Materials: Classification, Structures, and Applications

Gu,

Duan,

Liu

et al. 2024

Chem. Rev.

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Metallic materials are usually composed of single phase or multiple phases, which refers to homogeneous regions with distinct types of the atom arrangement. The recent studies on nanostructured metallic materials provide a variety of promising approaches to engineer the phases at the nanoscale. Tailoring phase size, phase distribution, and introducing new structures via phase transformation contribute to the precise modification in deformation behaviors and electronic structures of nanostructural metallic materials. Therefore, phase engineering of nanostructured metallic materials is expected to pave an innovative way to develop materials with advanced mechanical and functional properties. In this review, we present a comprehensive overview of the engineering of heterogeneous nanophases and the fundamental understanding of nanophase formation for nanostructured metallic materials, including supra-nano-dual-phase materials, nanoprecipitation-and nanotwin-strengthened materials. We first review the thermodynamics and kinetics principles for the formation of the supra-nano-dual-phase structure, followed by a discussion on the deformation mechanism for structural metallic materials as well as the optimization in the electronic structure for electrocatalysis. Then, we demonstrate the origin, classification, and mechanical and functional properties of the metallic materials with the structural characteristics of dense nanoprecipitations or nanotwins. Finally, we summarize some potential research challenges in this field and provide a short perspective on the scientific implications of phase engineering for the design of next-generation advanced metallic materials.

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Section: Gradient Nanotwinned Structuresmentioning

confidence: 96%

Section: Nanotwinned Structuresmentioning

confidence: 99%

Section: Strength−ductility Synergy By Coherent Nanoprecipitates (Cnps)mentioning

confidence: 99%

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Phase Engineering of Nanostructural Metallic Materials: Classification, Structures, and Applications

Gu,

Duan,

Liu

et al. 2024

Chem. Rev.

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“…Compared with the S1 sample, the S2 sample had higher strength and better flexibility and generates the δ phase while retaining the tough β' phase, which made the high-tin bronze have good processability. The tensile strength of several representative nanostructured coppers, selective laser melting fabricated copper, and gradient nanostructured bronze alloys with pre-nanoprecipitation prepared by employing surface mechanical wear treatment techniques performance, Figure 6c [19][20][21]. Compared with these several copper alloys by changing the phase structure, they have more excellent comprehensive mechanical properties than alloys with conventional microstructures.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Evolution behavior of δ phase in Cu12Sn2Ni alloy and the corresponding effects on alloy property

Jia

Zhang

et al. 2023

Materialwissenschaft Werkst

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With the increase of tin content in tin bronze, the rise of δ phase made the strength, hardness of tin bronze increase and the ductility decrease sharply, that difficult to process. In this paper, the Cu12Sn2Ni alloy was prepared by centrifugal casting, the microstructure and phase formation before and after heat treatment were observed by x-ray diffraction, scanning electron microscope, and transmission electron microscope. The results showed that the ascast sample microstructure was composed of equiaxed grains rather than coarse dendrites. centrifugal casting inhibits tin diffusion to form metastable phase β'-Cu 13.7 Sn. The as-cast sample had good deformability and its tensile strength and elongation were 381.9 MPa and 12.4 %, respectively, which are higher than the mechanical properties of gravity casting. The tensile strength and elongation of the sample after furnace cooling at 620 °C/8 min are 439.5 MPa and 24.4 %, respectively, the increase was 16.6 % and 85.07 %, compared with the as-cast samples, due to the solid solution strengthening, the second phase strengthening and the homogenization of the microstructure.

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“…This dilemma is also outstanding for Cu and its alloys, and thus extraordinary efforts have been devoted to strengthening Cu alloys with less sacrificing ductility [ 4 , 5 , 6 , 7 ]. Architecting gradient structure (GS) is a success story to overcome this dilemma for various alloys [ 8 , 9 , 10 , 11 , 12 , 13 , 14 ] and has been successfully applied in pure Cu and several Cu alloys [ 15 , 16 , 17 , 18 , 19 ]. Lu et al prepared a gradient nano-grained pure Cu using a surface mechanical grinding treatment (SMGT) [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Preparing Thick Gradient Surface Layer in Cu-Zn Alloy via Ultrasonic Severe Surface Rolling for Strength-Ductility Balance

Sun

et al. 2022

Materials

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A gradient structure (GS) design is a prominent strategy for strength-ductility balance in metallic materials, including Cu alloys. However, producing a thick GS surface layer without surface damage is still a challenging task limited by the available processing technology. In this work, a gradient structure (GS) surface layer with a thickness at the millimeter scale is produced in the Cu-38 wt.% Zn alloy using ultrasonic severe surface rolling technology at room temperature. The GS surface layer is as thick as 1.1 mm and involves the gradient distribution of grain size and dislocation density. The grain size is refined to 153.5 nm in the topmost surface layer and gradually increases with increasing depth. Tensile tests indicate that the single-sided USSR processed alloy exhibits balanced strength (467.5 MPa in yield strength) and ductility (10.7% in uniform elongation). Tailoring the volume fraction of the GS surface layer can tune the combination of strength and ductility in a certain range. The high strength of GS surface layer mainly stems from the high density of grain boundaries, dislocations and dislocation structures, deformation twins, and GS-induced synergistic strengthening effect. Our study elucidates the effect of the thick GS surface layer on strength and ductility, and provides a novel pathway for optimizing the strength-ductility combination of Cu alloys.

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Combining synergetic effects of gradient nanotwins and nanoprecipitates in heterogeneous bronze alloy

Cited by 31 publications

References 86 publications

Phase Engineering of Nanostructural Metallic Materials: Classification, Structures, and Applications

Phase Engineering of Nanostructural Metallic Materials: Classification, Structures, and Applications

Evolution behavior of δ phase in Cu12Sn2Ni alloy and the corresponding effects on alloy property

Preparing Thick Gradient Surface Layer in Cu-Zn Alloy via Ultrasonic Severe Surface Rolling for Strength-Ductility Balance

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