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Strength-Ductility Synergy in High Entropy Alloys by Tuning the Thermo-Mechanical Process Parameters: A Comprehensive
Rushikesh Sabban1, K Dash1, S Suwas2
1Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai, 600036 India.
Journal of the Indian Institute of Science
|March 29, 2022
Summary
Thermo-mechanical processing (TMP) enhances the strength-ductility balance in high entropy alloys (HEAs). This review explores how TMP, including severe plastic deformation, optimizes HEA microstructure and texture for superior mechanical properties.
Area of Science:
- Materials Science
- Metallurgy
- Mechanical Engineering
Background:
- The strength-ductility trade-off is critical for material performance.
- As-synthesized high entropy alloys (HEAs) often exhibit inadequate strength-ductility synergy.
- HEA microstructure and phase stability offer potential for tailoring mechanical properties.
Purpose of the Study:
- To critically review the role of thermo-mechanical processing (TMP) in achieving superior strength-ductility combinations in HEAs.
- To analyze the influence of microstructure and texture evolution during TMP on mechanical properties.
- To explore the potential of severe plastic deformation (SPD) processes for HEA enhancement.
Main Methods:
- Review of existing literature on TMP of single-phase (FCC, BCC) and multiphase HEAs.
- Analysis of processing strategies including rolling, annealing, and SPD.
- Discussion on the evolution of microstructure and texture during processing.
Main Results:
- TMP, encompassing rolling and annealing, significantly tailors HEA microstructure and texture.
- Severe plastic deformation processes show promise for improving the strength-ductility combination in HEAs.
- Optimized processing strategies are key to achieving desired strength-ductility synergy.
Conclusions:
- Thermo-mechanical processing is an effective strategy for enhancing the strength-ductility balance in HEAs.
- Understanding microstructure and texture evolution is crucial for optimizing HEA mechanical performance.
- Futuristic approaches are needed for efficient and hassle-free HEA processing to achieve high strength-ductility proficiency.
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