동적재료모델에 의한 벌크 비정질 금속의 판재성형성에 대한 고찰

Dynamic Materials Model-Based Study on the Formability of Bulk Metallic Glass Sheets

Viscoplastic deformation and sheet forming behavior of multicomponent Zr-based bulk metallic glass alloy has been investigated. From a series of mechanical test results, basic processing maps based on Dynamic Materials Model have been constructed to establish feasible forming conditions. Stamping in laboratory scale was then performed at the various stroke speeds and temperatures using a hydraulic press. Failure in macroscopic level was examined to check the validity of constructed processing maps.