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<p>Rolling processing is crucial for regulating the mechanical properties of medium/high-entropy alloys (M/HEAs), and combining rolling with annealing treatments effectively achieves a combination of high strength and ductility. This review summarizes the applications of four typical rolling processes such as room-temperature rolling (RTR), cryorolling (CR), asymmetric rolling (ASR), and asymmetric cryorolling (ACR) in M/HEAs, focusing on their microstructural evolution and mechanical performance. CR suppresses dynamic recovery, reduces stacking fault energy, and promotes twinning and FCC → HCP phase transformation. ASR introduces shear strain to refine grains, weaken texture, and form gradient microstructures. ACR, integrating CR and ASR, can construct hierarchical microstructures, thereby achieving a good combination of high strength and ductility via back stress strengthening. The review also discusses the unique mechanical behavior of M/HEA foils and the wide-temperature performance of ACR-processed alloys. Current challenges of CR include economic feasibility, process-microstructure-property database construction, material design, and multi-scale simulation. Future research should focus on continuous production, data-driven optimization, low-cost alloy design, and integrated simulation-characterization, providing guidance for high-performance M/HEA sheet fabrication.</p>

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A review on development of high-performance medium/high-entropy alloys via special rolling techniques

  • 期刊论文

  • 发表日期：

    2026年5月26日

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  • Xiang Li,
  • Zhide Li,
  • Denis Pustovoitov,
  • Alexander Pesin,
  • Charlie Kong,
  • Hailiang Yu

摘要

Rolling processing is crucial for regulating the mechanical properties of medium/high-entropy alloys (M/HEAs), and combining rolling with annealing treatments effectively achieves a combination of high strength and ductility. This review summarizes the applications of four typical rolling processes such as room-temperature rolling (RTR), cryorolling (CR), asymmetric rolling (ASR), and asymmetric cryorolling (ACR) in M/HEAs, focusing on their microstructural evolution and mechanical performance. CR suppresses dynamic recovery, reduces stacking fault energy, and promotes twinning and FCC → HCP phase transformation. ASR introduces shear strain to refine grains, weaken texture, and form gradient microstructures. ACR, integrating CR and ASR, can construct hierarchical microstructures, thereby achieving a good combination of high strength and ductility via back stress strengthening. The review also discusses the unique mechanical behavior of M/HEA foils and the wide-temperature performance of ACR-processed alloys. Current challenges of CR include economic feasibility, process-microstructure-property database construction, material design, and multi-scale simulation. Future research should focus on continuous production, data-driven optimization, low-cost alloy design, and integrated simulation-characterization, providing guidance for high-performance M/HEA sheet fabrication.