대한기계학회:학술대회논문집 (Proceedings of the KSME Conference)
- 대한기계학회 2008년도 추계학술대회A
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- Pages.1718-1722
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- 2008
Improvement of Plastic Deformation in Hetrogeneous Atomic Cu-Zr Amorphous Alloy with Distributed Nanocrystals
- 박준영 ;
- ;
- Park, Jun-Young (Kumoh National Institute of Technology) ;
- Shibutani, Yoji (Osaka University) ;
- Wakeda, Masato (Osaka University)
- 발행 : 2008.11.05
초록
This study explores the influence of volume fraction of nanocrystals of Cu-Zr amorphous alloys on shear band formation. As the number of crystals with very tiny size increases, the strain localization, i.e. shear band, decreases without large drop of flow stress. The DPRs also depict no sudden drop and relatively high values. The strain state during the deformation represents a few shear bands at low volume fraction while there are no distinguishable shear bands at high volume fraction of nanocrystals.