Lightweight Ultra‐Strength in AlFeNiTiV Complex Concentrated Alloys via Cu Microalloying‐Driven Lattice Coherency Tuning
Source abstract
Abstract
Abstract Next‐generation high‐performance structural materials are required for lightweight design strategies and advanced energy applications. In this work, a custom AlFeNiTiV complex concentrated alloy (CCA) with a combination of ultra‐high compressive strength, over 3.3 GPa, and lightweight, 6.83 g cm −3 , is developed via Cu microalloying‐driven lattice coherency tuning. The strengthening of the CCA is based on minimal lattice mismatch to achieve maximum coherency strengthening. Maximum precipitation dispersion and alleviating stress concentration at the interface allow the alloy to maintain a macro compressive strain of 11.8%. Meanwhile, it can still maintain excellent yield strength at 600 °C for the low lattice misfit, extremely stable L2 1 structure, achieving 1311.6 MPa. These findings provide insights into developing lightweight, high‐temperature CCAs through a phase interface modulation strategy.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: High Entropy Alloys Studies · Additive Manufacturing Materials and Processes · Intermetallics and Advanced Alloy Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Materials Science and Engineering and Institute of Materials Genome & Big Data Harbin Institute of Technology (Shenzhen) Shenzhen 518055 China
Department of Mechanical and Energy Engineering Southern University of Science and Technology Shenzhen 518055 China
Research Institute of Physical Sciences in Special Environments Harbin Institute of Technology (Shenzhen) Shenzhen 518055 China
State Key Laboratory of Advanced Welding and Joining Harbin Institute of Technology Harbin 150001 China
Shenzhen Key Laboratory of New Materials Technology Shenzhen 518055 China
Funding
Basic and Applied Basic Research Foundation of Guangdong Province · National Natural Science Foundation of China · Shenzhen Science and Technology Innovation Program
References (54)
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