Gongbo Bian

Taiyuan University of Technology

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Wenxian Wang

Taiyuan University of Technology

Mengting Ran

Taiyuan University of Technology

Liuyang Qin

Guilin University of Technology

Hongxia Zhang

China University of Petroleum, East China

Lixia Pei

South China University of Technology

Min Zeng

Xi'an Jiaotong University

Tingting Zhang

Chengdu University of Traditional Chinese Medicine

Wenxian Wang

Taiyuan University of Technology

Tingting Zhang

University of South Florida

Hongwei Zhang

Northeast Agricultural University

Cooperative Institutions

Taiyuan University of Technology

Tsinghua University

State Key Laboratory of Tribology

Nanjing University of Aeronautics and Astronautics

Chinese Academy of Sciences

Zhejiang University

University of Chinese Academy of Sciences

Aerospace Research Institute of Materials and Processing Technology

Ministry of Education of the People's Republic of China

Southwest Jiaotong University

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Interfacial Microstructure and Fracture Mechanism of Cu/Al Composite Plate Jointing Process Assisted by Pulsed Current-Melted Al Spheres

Gongbo Bian Tingting Zhang Mengting Ran Kaijing ZHANG Wenxian Wang

In this work, a novel method based on pulsed-current-assisted vacuum sintering processes was employed to fabricate the Cu/Al laminated metal composites (LMCs) with outstanding mechanical properties. The microstructural evolution, interfacial characteristics, phase composition, mechanical properties, and fracture behavior of Cu/Al composites prepared by the melted Al spheres induced with high-frequency pulsed current were investigated. Results show that robust interfacial bonding without micropores and cracks, and the grain structure consists mainly of recrystallized and substructured grains characterized by high angular grain boundaries. Meanwhile, interfacial analysis identifies melted Al and Al2Cu phases within the transition layer, exhibiting distinctive features such as "Al+Al2Cu" corrugated interfaces and island eutectic structures. Additionally, mechanical properties demonstrate superior strength (210 ± 13 MPa) and elongation (27% ± 0.7%) in specimens with corrugated interfaces compared to those with flat interfaces. Finite element analysis further elucidates stress redistribution and fracture behavior, emphasizing the enhanced crack resistance in specimens featuring corrugated interfaces. These findings underscore the significance of interface engineering and microstructural refinement in optimizing the mechanical performance of Cu/Al composite materials, offering valuable insights for their application in diverse engineering domains.

10.2139/ssrn.4835872

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Electropulsing-enhanced atomic diffusion and recrystallization to optimize mechanical properties of Al/Cu laminated metal composites

Journal of Manufacturing Processes (2024)

Mengting Ran Gongbo Bian Hongwei Zhang Jie Yan Wenxian Wang

Recrystallization (geology)

Dynamic Recrystallization

Atomic diffusion

10.1016/j.jmapro.2024.03.092

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Citations (8)

Characterization of Non-Steady-Stage During Friction Stir Welding

Kun Wang Peng Dong Xujing Niu Liuyang Qin Gongbo Bian

Download This Paper Open PDF in Browser Add Paper to My Library Share: Permalink Using these links will ensure access to this page indefinitely Copy URL Copy DOI

Friction Stir Welding

Characterization

10.2139/ssrn.4766384

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Venation‐Mimicking, Ultrastretchable, Room‐Temperature‐Attachable Metal Tapes for Integrated Electronic Skins

Advanced Materials (2022)

Bin Feng Tianming Sun Wengan Wang Yu Xiao Jinpeng Huo

Future electronic skin systems require stretchable conductors and low-temperature integration of external components, which remains challenging for traditional metal films. Herein, a bioinspired design concept is reported to endow metal films with 200% stretchability as well as room-temperature integration capability with diverse components. It is revealed that by controllable implantation of defects, distinctive venation-mimicking cracking modes can be induced in strained metal films, leading to profound stretchability regulation. An intriguing exponential-to-linear transition of the film electromechanical performance is observed, which is elucidated by a unified model covering the essence of all modes. Combined with room-temperature integration capability, an integrated electronic skin is constructed with metal films serving as stretchable electrodes, diverse sensors, and "tapes" to attach subcomponents, showing prospects in helping disabled people. This one-step, defect implantation strategy is applicable to common metals without special substrate treatments, which enables fascinating ultrastretchable metal film conductors with low-temperature integration capability to spark more sophisticated flexible electronic systems.

Electronic materials

10.1002/adma.202208568

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Citations (19)

Elongation enhancement strategies for AISI 430 stainless steel welded joints: insights from molecular dynamics analysis

Acta Mechanica Sinica (2024)

Gongbo Bian Feng Liu Tingting Zhang Mengting Ran Xiaoyan Xue

Elongation

Dynamics

10.1007/s10409-024-24019-x

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An experimental and numerical study on the evolution of pores and its effect on the tensile properties of LPBF Invar36 with different energy density

Journal of Materials Research and Technology (2024)

Zheyu Yang Wenxian Wang Yue Chen Shubang Wang Gongbo Bian

Laser powder bed fusion (LPBF) Invar 36 alloy has attracted plenty of attention in cryogenic components or precision instruments due to its low coefficient of thermal expansion in a wide range of temperature. However, the LPBF Invar 36 has a significant anisotropic mechanical property due to the unique columnar grain morphology and pore feature. In this study, the influence of scanning speed on the anisotropic tensile properties were investigated, and the melt pool dynamics were analyzed by the numerical simulation. In this respect, tensile tests of specimens parallel and perpendicular to the building direction with a scanning speed from 200 to 1400 mm/s of LPBF Invar 36 alloy were conducted, and the microstructural influential factors on the anisotropic tensile properties were analyzed. Results show that as the volumetric energy density (VED) increases, the inhomogeneity of grain morphology decreases, while the pore feature changes from the lack-of-fusion (LOF) pore perpendicular to the building direction to the bubble-shaped spherical pore, which is resulted from the collapse of the key-holes. In this case, the grain orientation and size, as well as the dislocation density in the vicinity of pores are influenced by the pore morphology due to different thermal history. On the whole, the combined morphology of dislocation and stress concentration affected by the pore morphology are the main reason of the increased level of anisotropy in tensile properties.

Invar

Morphology

10.1016/j.jmrt.2024.07.026

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Citations (6)

Dynamic tension and constitutive model in Fe40Mn20Cr20Ni20 high-entropy alloys with a heterogeneous structure

Materials Science and Engineering A (2022)

Yingzhi Wang Z.M. Jiao Gongbo Bian Huijun Yang Haiyan He

Dynamic Recrystallization

High-Entropy Alloys

10.1016/j.msea.2022.142837

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Citations (51)

Rapid Preparation of Al/Mg Composite Plates Using Pulsed-Current-Assisted Transient-Liquid-Phase Technique: Finite Element Analysis and Mechanism Elucidation

Materials Today Communications (2025)

Gongbo Bian Tingting Zhang Kaijing Zhang Mengting Ran Zhihang Yan

Transient (computer programming)

10.1016/j.mtcomm.2025.111774

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Comparative Analysis of Three Different Probe Designs for Reducing Hook Defects in FSW of AA6005-T6 Aluminum Alloy

Metals (2024)

Liuyang Qin Hongxia Zhang Gongbo Bian Kewei Li Peng Dong

Hook defects are common in FSW butt–lap joints, resulting in a significant safety hazard for the parts that suffer cyclic load. In this study, a numerical simulation based on the Euler–Lagrange coupling method was conducted to investigate the formation process of hook defect during FSW of AA6005-T6 aluminum alloy. The simulation results were validated with experimental data, showing good agreement. The formation of the hook defect is caused by the threads on the probe promoting material flow in the thickness direction. In order to further study the effect of probe morphology on hook defects, three kinds of probe models with different morphology were established and numerically simulated by the CEL method. The simulation results show that all three kinds of probes can reduce the size of the hook. The welds obtained using the left–left probe (LLP) and the three-plane probe (TPP) both exhibit void defects, while the welds obtained by a right–left probe (RLP) have no internal void defects. The experimental results show the same characteristics as the simulation results, and the size of the hook defect is reduced to 58 μm.

Hook

10.3390/met14060653

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A new method for fabricating Mg/Al alloy composites by pulse current-assisted rolled welding

Materials Letters (2022)

Tingting Zhang Yan Wang Zhenbo Xu Kaihang Zhu Gongbo Bian

Diffusion layer

10.1016/j.matlet.2022.133247

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Citations (8)