| 학회 | 한국재료학회 |
| 학술대회 | 2010년 봄 (05/13 ~ 05/14, 삼척 팰리스 호텔) |
| 권호 | 16권 1호 |
| 발표분야 | F. Multiscale Materials, Theory and Phenomena(멀티스케일 재료, 이론 및 현상) |
| 제목 | Plastic strains of Cu65Zr35 model amorphous alloy during tension and compression test |
| 초록 | Elastostatic and quasistatic compression tests performed in a wide compositional range of the binary Cu-Zr amorphous alloys have demonstrated that the difference in the structural disordering (or softening, shear localization and energy absorption) during deformation control the plasticity of amorphous alloys. If the binary Cu-Zr amorphous alloys can be deformed plastically with a few percent under compression mode, these alloys break without any plasticity when deformed under uniaxial tensile mode. To investigate these phenomena, we explore the deformation behavior of Cu65Zr35 during tension and compression tests using molecular dynamics simulations. The results demonstrated that when tensile stress is applied to the alloy, the degree of structural softening (strain localization) is high and the yield strength decreased when comparing to the compressive stress. We clarify this different deformation behavior during tension and compression tests, by exploring the relationship between the stress state during tension and compression modes and its effect on the strain localization. |
| 저자 | 박경원 |
| 소속 | 한국과학기술(연) |
| 키워드 | amorphous alloy; strain localization; tension and compression; plasticity |
