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Updated: Jan 7, 2026
05:04
Determining the Mechanical Strength of Ultra-Fine-Grained Metals
Published on: November 22, 2021
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Crystal-Glass Nano-Dual-Phase Alloys Achieve Ultrahigh Strength and Large Homogeneous Plastic Deformation
Yan-Ning Zhang1, Chang Liu2, Zhi-Wei Shan1
1Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano) and Hysitron Applied Research Center in China (HARCC), State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, China.
Advanced Materials (Deerfield Beach, Fla.)
|January 5, 2026
Summary
Crystal-glass nano-dual-phase (CG-NDP) alloys combine high strength and ductility by replacing grain boundaries with nanoscale amorphous phases. This structure enables unique deformation mechanisms for enhanced plasticity in structural materials.
Area of Science:
- Materials Science
- Metallurgy
- Nanotechnology
Background:
- Achieving high strength and ductility in structural materials is a key challenge.
- Nanocrystalline alloys and metallic glasses have limitations in ductility and plasticity, respectively.
- Grain boundary instability and shear band formation hinder performance.
Purpose of the Study:
- To review recent advancements in crystal-glass nano-dual-phase (CG-NDP) alloys.
- To highlight the enhanced strength and plasticity of CG-NDP alloys.
- To discuss deformation mechanisms and applications of CG-NDP alloys.
Main Methods:
- Review of recent research on CG-NDP alloys.
- Analysis of microstructural features, specifically the amorphous phase at grain boundaries.
- Investigation of deformation mechanisms, including dislocation motion and phase transformation.
Main Results:
- CG-NDP alloys exhibit significantly enhanced strength and plasticity.
- Replacing grain boundaries with nanoscale amorphous phases increases yield strength.
- Global plastic flow and dislocation emission/annihilation at interfaces contribute to large homogeneous deformation.
Conclusions:
- CG-NDP alloys offer a promising pathway to overcome limitations of traditional alloys.
- The unique structure enables superior mechanical properties through novel deformation mechanisms.
- Potential applications include electrolytic catalysis and wear-resistant coatings.
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