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<p>Partial/local high-entropy (PLHE) design is proposed as an entropy-efficient framework in which configurational complexity is assigned only to selected functional units that govern degradation or performance. Rather than requiring a whole alloy to be high entropy, PLHE design retains a conventional matrix with established processing, cost and service advantages, while entropy is introduced into precipitates, interfaces, sublattices, binders, dispersoids or local environments. Local high entropy confines complexity in space, whereas partial high entropy confines it chemically to selected phases or mixing sites. The operational boundary of PLHE design is defined by the requirement that the entropy-bearing unit be compositionally identifiable, intentionally designed, and mechanistically linked to the targeted response. Configurational entropy should be evaluated at the scale of the designed unit rather than from bulk nominal composition, and long-term stability requires thermodynamic and kinetic verification. By linking entropy-bearing units to mechanism-controlling bottlenecks, including coarsening, defect accumulation, passivation failure and functional coupling, PLHE design offers a selective route for applying high-entropy concepts to steels and related metallic materials.</p>

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High entropy where it matters: partial/local high-entropy design for entropy-efficient metallic materials

  • 期刊论文

  • 发表日期：

    2026年7月31日

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  • Jia-Sheng Wang,
  • Yong Zhang

摘要

Partial/local high-entropy (PLHE) design is proposed as an entropy-efficient framework in which configurational complexity is assigned only to selected functional units that govern degradation or performance. Rather than requiring a whole alloy to be high entropy, PLHE design retains a conventional matrix with established processing, cost and service advantages, while entropy is introduced into precipitates, interfaces, sublattices, binders, dispersoids or local environments. Local high entropy confines complexity in space, whereas partial high entropy confines it chemically to selected phases or mixing sites. The operational boundary of PLHE design is defined by the requirement that the entropy-bearing unit be compositionally identifiable, intentionally designed, and mechanistically linked to the targeted response. Configurational entropy should be evaluated at the scale of the designed unit rather than from bulk nominal composition, and long-term stability requires thermodynamic and kinetic verification. By linking entropy-bearing units to mechanism-controlling bottlenecks, including coarsening, defect accumulation, passivation failure and functional coupling, PLHE design offers a selective route for applying high-entropy concepts to steels and related metallic materials.