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Updated: Jul 9, 2026
05:04
Determining the Mechanical Strength of Ultra-Fine-Grained Metals
Published on: November 22, 2021
Unique mechanical properties of nanostructured metals
1Department of Adaptive Machine Systems, Osaka University, Suita 565-0871, Japan.
Journal of Nanoscience and Nanotechnology
|December 1, 2007
Summary
Accumulative Roll Bonding (ARB) fabricates bulk nanostructured metals with ultrafine grains. These novel nanostructured metals exhibit unique mechanical properties due to their grain boundary-rich structures.
Area of Science:
- Materials Science
- Metallurgy
- Nanotechnology
Background:
- Fabrication of bulk metals with nanoscale grain structures is now possible.
- Severe plastic deformation (SPD) is a key technique for achieving these structures.
- Ultrafine-grained and nanocrystalline metals offer unique material properties.
Purpose of the Study:
- To introduce the Accumulative Roll Bonding (ARB) process for fabricating nanostructured metals.
- To present the characteristics of bulk nanostructured metals produced by ARB.
- To explore the unique mechanical properties of these nanostructured materials.
Main Methods:
- Development of an original severe plastic deformation (SPD) process named Accumulative Roll Bonding (ARB).
- Utilizing rolling deformation as the primary mechanism in the ARB process.
- Application of ARB to various metals and alloys to create bulk nanostructured sheets.
Main Results:
- Successful fabrication of bulk nanostructured sheets of diverse metals and alloys using the ARB process.
- Demonstration of the ARB process's effectiveness in achieving nanometer-scale grain dimensions.
- Observation of unique mechanical properties in ARB-fabricated nanostructured metals.
Conclusions:
- The Accumulative Roll Bonding (ARB) process is a viable method for producing bulk nanostructured metals.
- Nanostructured metals fabricated by ARB exhibit distinct mechanical behaviors compared to conventional coarse-grained materials.
- The high density of grain boundaries in nanostructured metals is likely responsible for their unique properties.
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