Materials Today Sustainability, Год журнала: 2024, Номер unknown, С. 101006 - 101006
Опубликована: Окт. 1, 2024
Язык: Английский
Small Structures, Год журнала: 2024, Номер 5(10)
Опубликована: Июнь 30, 2024
High‐entropy alloys (HEAs) are novel materials composed of multiple elements with nearly equal concentrations and they exhibit exceptional properties such as high strength, ductility, thermal stability, corrosion resistance. However, the intricate diverse structures HEAs pose significant challenges to understanding predicting their behavior at different length scales. This review summarizes recent advances in computational simulations experiments structure‐property relationships nano/micro Various methods first‐principles calculations, molecular dynamics simulations, phase diagram finite element discussed for revealing atomic/chemical crystal structures, defect formation migration, diffusion transition, stress‐strain distribution, deformation behavior, thermodynamic HEAs. Emphasis is placed on synergistic effects terms validation complementarity provide insights into underlying mechanisms evolutionary rules Additionally, current future directions experimental studies identified, including accuracy, efficiency, scalability methods, integration multiscale multiphysics models, exploration practical applications
Язык: Английский
Процитировано
8
Ceramics International, Год журнала: 2023, Номер 50(4), С. 5893 - 5913
Опубликована: Дек. 6, 2023
High-entropy alloys (HEAs) are an advanced material that has attracted people's attention in recent years due to their uniform structure and excellent mechanical properties. Therefore, thanks performance, the coatings widely used various industrial sectors. Moreover, HEAs can suffer from certain corrosion during actual use, which negatively impact properties working life. The research status progress of behavior reviewed this paper. First, we made introduction basic concepts, characteristics, preparation processes HEAs. Then, a detailed analysis discussion for behavior, mechanism influencing factors These mainly include fabrication processing, addition alloying elements, element recombination, alloy structure. Finally, future direction development corrosion, as well potential applications concluded prospected. Consequently, based on summary progress, it provide valuable technical guidance references junior researchers who just starting out, engineering personnel related fields. And also plays enlightening role promoting design new programs production processes.
Язык: Английский
Процитировано
12
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
0
Advanced Engineering Materials, Год журнала: 2025, Номер unknown
Опубликована: Май 4, 2025
Recently, dual‐phase high‐entropy alloys with excellent strength–ductility combination have attracted widespread attention in the scientific community. Herein, three dense and crack‐free FeCoCrNiAl 0.6 high entropy (HEAs) were successfully prepared by laser directed energy deposition (LDED) via adjusting scanning speed. The printed formed fine columnar face‐centered cubic (FCC) dendrites woven mesh body‐centered (BCC) interdendrites. BCC phase is further composed of nanoscale A2 B2 phases spinodal decomposition. As speed increased from 5 mm s −1 to 9 , fraction FCC 56.9 70.5%, size refined. sample at an average grain 3.9 μm showed a comprehensive mechanical property, namely, yield stress ultimate tensile (712.0 1121.9 MPa) total elongation 16.5%. fracture surface changed cleavage‐type facet ductile dimples as increased. Based on microstructures base materials, it can be concluded that microstructure soft prevent initiation propagation microcracks and, thereafter, alleviate brittle failure.
Язык: Английский
Процитировано
0
Acta Materialia, Год журнала: 2025, Номер unknown, С. 121118 - 121118
Опубликована: Май 1, 2025
Язык: Английский
Процитировано
0
Journal of Materials Research and Technology, Год журнала: 2025, Номер unknown
Опубликована: Май 1, 2025
Язык: Английский
Процитировано
0
Materials Today Communications, Год журнала: 2024, Номер unknown, С. 111064 - 111064
Опубликована: Ноя. 1, 2024
Язык: Английский
Процитировано
2
Metals, Год журнала: 2024, Номер 14(3), С. 264 - 264
Опубликована: Фев. 22, 2024
High-entropy alloys (HEAs) attract much attention as possible radiation-resistant materials due to their several unique properties. In this work, the generation and evolution of radiation damage response an FeNiCrCoCu HEA bulk Ni in early stages were explored using molecular dynamics (MD). The design, concerned with investigating irradiation tolerance HEA, encompassed following: (1) structure was obtained through a hybrid method that combined Monte Carlo (MC) MD vs. random distribution atoms. (2) Displacement cascades caused by different primary knock-on atom (PKA) energy levels (500 5000 eV) simulated. There almost no element segregation MD/MC analyzing Warren–Cowley short-range order (SRO) parameters. case, similar selected substrate conduct cascade process. A mass defects (interstitials vacancies) generated primarily PKA departure. number adatoms grew, which slightly roughened surface, distributed deeper increased for both pure HEA. At time thermal spike, one fascinating phenomenon occurred where Frenkel pairs more than Ni. However, we opposite result, fewer survived final state cascade. size defect clusters grew increasing materials. Defects suppressed HEA; is say, “cowards”, behaving introverted manner according anthropomorphic rhetorical method.
Язык: Английский
Процитировано
0
Materials Today Sustainability, Год журнала: 2024, Номер unknown, С. 101006 - 101006
Опубликована: Окт. 1, 2024
Язык: Английский
Процитировано
0