High-throughput design of high-performance lightweight high-entropy alloys
Autor: | Zongrui Pei, Fan Zhang, Ke An, Jonathan D. Poplawsky, Dong Ma, Michael Widom, Jeffrey A. Hawk, Yan Chen, Lizhi Ouyang, Chuan Zhang, Michael C. Gao, Peter K. Liaw, Rui Feng, Yang Ren |
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Jazyk: | angličtina |
Rok vydání: | 2021 |
Předmět: |
Materials science
Science Alloy General Physics and Astronomy 02 engineering and technology engineering.material General Biochemistry Genetics and Molecular Biology Article 03 medical and health sciences Computational methods Process engineering CALPHAD Throughput (business) Strengthening mechanisms of materials 030304 developmental biology 0303 health sciences Multidisciplinary Structural material business.industry High entropy alloys General Chemistry Metals and alloys 021001 nanoscience & nanotechnology Multiscale modeling Structural materials Superalloy Phase transitions and critical phenomena engineering 0210 nano-technology business |
Zdroj: | Nature Communications Nature Communications, Vol 12, Iss 1, Pp 1-10 (2021) |
ISSN: | 2041-1723 |
Popis: | Developing affordable and light high-temperature materials alternative to Ni-base superalloys has significantly increased the efforts in designing advanced ferritic superalloys. However, currently developed ferritic superalloys still exhibit low high-temperature strengths, which limits their usage. Here we use a CALPHAD-based high-throughput computational method to design light, strong, and low-cost high-entropy alloys for elevated-temperature applications. Through the high-throughput screening, precipitation-strengthened lightweight high-entropy alloys are discovered from thousands of initial compositions, which exhibit enhanced strengths compared to other counterparts at room and elevated temperatures. The experimental and theoretical understanding of both successful and failed cases in their strengthening mechanisms and order-disorder transitions further improves the accuracy of the thermodynamic database of the discovered alloy system. This study shows that integrating high-throughput screening, multiscale modeling, and experimental validation proves to be efficient and useful in accelerating the discovery of advanced precipitation-strengthened structural materials tuned by the high-entropy alloy concept. Advanced screening strategies for the design of high-entropy alloys are highly desirable. Here the authors use the project-oriented design strategy and CALPHAD-based high-throughput calculation tool to rapidly screen promising Al-Cr-Fe-Mn-Ti structural HEAs for high-temperature applications. |
Databáze: | OpenAIRE |
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