Cluster‐Mediated Solute Stabilization and Shear‐Bypass Synergistic Strengthening in High‐Alloyed Systems
Source abstract
Abstract
ABSTRACT High alloy content and multiphase synergistic strengthening have become crucial strategies in contemporary metallic materials design for performance enhancement. A major challenge in this field lies in addressing compositional segregation arising from differences in solute diffusion, especially in high‐alloy systems such as aluminum‐lithium (Al‐Li) alloys. This study explores the 2060 Al‐Li alloy, a representative high‐alloy system, produced using twin‐roll casting, a segregation‐sensitive process, and analyzes segregation behavior through a customized solute field model. The results reveal that nanoclusters with high solute tolerance effectively reduce segregation‐induced degradation, leading to significant improvements in both strength and ductility, with an 18.7% increase in strength and a 41.5% increase in elongation. Furthermore, a shear‐bypass synergistic strengthening mechanism was identified. This work not only unlocks the potential of the twin‐roll casting process by leveraging sub‐rapid solidification advantages but also offers a promising technical and theoretical approach to mitigating compositional segregation, addressing a long‐standing challenge within the high‐alloy metallic materials industry.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Aluminum Alloy Microstructure Properties · Microstructure and mechanical properties · Solidification and crystal growth phenomena
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory of Solidification Control and Digital Preparation Technology (Liaoning Province) School of Materials Science and Engineering Dalian University of Technology Dalian China
Shandong Laboratory of Aluminum Advanced Manufacturing in Binzhou Weiqiao‐UCAS Science and Technology Park Binzhou China
Ningbo Research Institute of Dalian University of Technology Ningbo China
School of Materials and Metallurgy University of Science and Technology Liaoning Anshan China
State Key Laboratory of Rolling and Automation Northeastern University Shenyang China
Guangxi Advanced Aluminum Processing Innovation Center Co., Ltd Nanning China
Funding
National Natural Science Foundation of China · Fundamental Research Funds for the Central Universities
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