Dynamic Compressive Deformation and Fracture of a Hollow Bulk Metallic Glass

• 作者: Haiyan Ye Hefeng Zhou Huijun Yang Junwei Qiao Shengbo Sang Tao Zhang Zhihua Wang
• 来源期刊: 金属学报(美国)
• 学科: 工学
• 关键词: BULK Metallic GLASSES Deformation and Fracture DYNAMIC COMPRESSIVE Loading
• 年，卷（期）: 2013,（3）
• 页码范围: 50-55
• 页数: 6页
• 分类号: TG14

摘要

The dynamic mechanical behaviors of hollow Zr41.2Ti13.8Cu12.5Ni10.0Be22.5 bulk metal glass (BMG) are investigated using a splitting Hopkinson pressure bar (SHPB) in this study. Upon dynamic compressive loading, the hollow specimen exhibit lower strength and poor ductility, caused by the higher stress concentration for the hollow one through FEM modeling. The different strain-rate responses for the hollow specimen are compared and explained. On the fracture surface of the hollow samples, there are highly dense vein patterns, many liquid drops and fishbone-like patterns.