Strain Rate Dependency of Deformation Behavior in $Zr_{55}Cu_{30}Al_{10}Ni_{5}$ Bulk Metallic Glass

$Zr_{55}Cu_{30}Al_{10}Ni_{5}$ 벌크 유리상 금속 변형거동의 변형률속도 의존성

Zr-based bulk metallic glasses have a significant mechanical properties such as high strength and elastic strain limit, and a good processing ability due to the deformation behavior such as superplasticity under supercooled liquid region. Recently, many researches on the determination of optimum working condition in various bulk metallic glasses have been carried out. In this study, the deformation behavior and forming conditions of $Zr_{55}Cu_{30}Al_{10}Ni_{5}$ bulk metallic glass were investigated under three different strain rates and at various temperatures between 627K and 727K. The glass transition temperature, crystallization temperature and supercooled liquid region of $Zr_{55}Cu_{30}Al_{10}Ni_{5}$ bulk metallic glass are 680K, 762K and 82K, respectively.