Relationship between composite structures and compressive properties in CuZr-based bulk metallic glass system

• 来源期刊: 科学通报(英文版)
• 学科: 工学
• 年，卷（期）: 2011,（36）
• 页码范围: 3960-3964
• 页数: 5页
• 分类号: TG139.8
• 语种: 中文

摘要

Bulk metallic glass (BMG) composites with the austenite B2 phase as reinforcement macroscopically showed strain hardening behavior due to the plasticity induced by martensitic transformation during deformation. Relationship between characteristics of the B2-CuZr reinforcing phase and uniaxial compressive properties of CuZr-based BMG composites was studied. Mechanical properties of these BMG composites were found to depend on not only the reinforced phases but also the amorphous matrix,and the yield and fracture strength can be roughly estimated by the rule of mixture principle. Distribution of the reinforced B2-CuZr phase has an important impact on the compressive plasticity even for the composites with a similar volume fraction of the crystalline phase.