Plasticity improvement of amorphous alloy via skim cold rolling

• Published in: Metals and materials international Vol. 15; no. 2; pp. 209 - 214
• Main Authors: Pham, Minh Son, Park, Kyoung-Won, Yoo, Byung-Gil, Jang, Jae-Il, Lee, Jae-Chul
• Format: Journal Article
• Language: English
• Published: Springer The Korean Institute of Metals and Materials 01.04.2009; Springer Nature B.V; 대한금속·재료학회
• Subjects: Amorphous alloys; Characterization and Evaluation of Materials; Chemistry and Materials Science; Cold rolling; Engineering Thermodynamics; Heat and Mass Transfer; Machines; Magnetic Materials; Magnetism; Manufacturing; Materials Science; Metallic glasses; Metallic Materials; Metallurgy; Plastic deformation; Plastic strain; Plasticity; Processes; Solid Mechanics; Strain; Yield strength; 재료공학; amorphous alloy; plasticity; excess free volume; nanocrystals; chemical heterogeneity
• ISSN: 1598-9623; 2005-4149
• DOI: 10.1007/s12540-009-0209-2

This study reports the plasticity improvement of amorphous alloy associated with skim cold rolling. It was found that, with an increasing reduction in thickness of up to 6 %, the plastic strain increased considerably from 1.5 % to 9.6% while the yield strength deceased slightly from 1.75 GPa to 1.68 GPa. With further rolling beyond 6 %, the changes in the plasticity and yield strength were observed to be insignificant. In this study, we discussed the principle underlying the improved plasticity of amorphous alloy in view of the creation of excess free volume during skim cold rolling.