High-entropy CoCrFeMnNi alloy/aluminide-laminated composites with enhanced quasi-static bending and dynamic compression properties

IF 23.2 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Composites and Hybrid Materials Pub Date : 2023-11-02 DOI:10.1007/s42114-023-00782-6

Yu Wang, Xiangfei Peng, Ahmed M. Fallatah, Hongxin Qin, Wenjuan Zhao, Zaki I. Zaki, Hong Xu, Bin Liu, Hongkui Mao, Zeinhom M. El-Bahy, Hassan Algadi, Chao Wang

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Abstract

High-entropy CoCrFeMnNi alloy/aluminide-laminated composites were produced via the hot pressing diffusion sintering method at 1000 ℃. The results revealed that the aluminide structure layer based on the Al₁₃(Cr, Mn, Fe, Co, Ni)₄ phase first transforms into Al₈(Cr, Mn, Fe, Co, Ni)₅ phases with a trigonal crystal structure and then gradually transitions into Al(Cr, Mn, Fe, Co, Ni) phases with a B2 cubic crystal structure under high-temperature annealing. During high-temperature annealing, the elements Ni, Co, and Fe exhibit higher diffusion rates and diffusion amounts in the aluminide layer. The transformation of the aluminide layer is mainly influenced by the diffusion behavior of these elements. The absence of an oxidation interface barrier during high-temperature annealing results in multiple diffusion mechanisms, leading to the predominance of lattice diffusion and interface diffusion, which control the growth kinetic of the Al(Cr, Mn, Fe, Co, Ni) phase layer. The hardness indentation of the B2-Al(Cr, Mn, Fe, Co, Ni) phases, obtained by high-temperature annealing, shows no cracks and exhibits a multi-slip system characteristic of ductile aluminum compounds. This ductile behavior helps to reduce the deformation resistance in the hard and brittle layer and decreases the likelihood of delamination failure during plastic deformation. The bending strength of high-entropy/aluminide-layered (HAL) composite materials after high-temperature annealing reaches 1000 MPa, with the main energy dissipation modes being the plastic deformation of the ductile layer and fracture of the hard and brittle layer. Dynamic impact failure forms mainly include plastic deformation and delamination, with impact strength and energy consumption reaching 2317 MPa and 4750 J/mm³, respectively. This study provides phase formation sequence and dynamic mechanical properties of high-entropy CoCrFeMnNi/B2 structure aluminide-laminated composites which proved to be a new type of composites with good impact resistance.

Graphical Abstract

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具有增强准静态弯曲和动态压缩性能的高熵CoCrFeMnNi合金/铝合金层合复合材料

采用1000℃热压扩散烧结法制备了高熵CoCrFeMnNi合金/铝化物层状复合材料。结果表明:基于Al13(Cr, Mn, Fe, Co, Ni)4相的铝化物结构层首先转变为具有三角形晶体结构的Al8(Cr, Mn, Fe, Co, Ni)5相，然后在高温退火下逐渐转变为具有B2立方晶体结构的Al(Cr, Mn, Fe, Co, Ni)相。在高温退火过程中，Ni、Co和Fe元素在铝化物层中表现出较高的扩散速率和扩散量。铝化物层的转变主要受这些元素的扩散行为的影响。高温退火过程中氧化界面势垒的缺失导致了多种扩散机制，导致晶格扩散和界面扩散的优势，控制了Al(Cr, Mn, Fe, Co, Ni)相层的生长动力学。高温退火得到的B2-Al(Cr, Mn, Fe, Co, Ni)相的硬度压痕没有出现裂纹，表现出韧性铝化合物的多滑移体系特征。这种延性行为有助于降低硬脆层的变形阻力，降低塑性变形时分层破坏的可能性。高熵/铝层状(HAL)复合材料高温退火后的抗弯强度达到1000 MPa，能量耗散方式主要为韧性层的塑性变形和硬脆层的断裂。动态冲击破坏形式主要包括塑性变形和分层，冲击强度和能耗分别达到2317 MPa和4750 J/mm3。本研究提供了高熵CoCrFeMnNi/B2结构铝层复合材料的相形成顺序和动态力学性能，证明该复合材料是一种具有良好抗冲击性能的新型复合材料。图形抽象

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来源期刊

Advanced Composites and Hybrid Materials Multiple-

CiteScore

26.00

自引率

21.40%

发文量

185

期刊介绍： Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field. The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest. Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials. Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.