Author/Authors :
Wu، نويسنده , , Guojuan and Li، نويسنده , , Ran and Liu، نويسنده , , Zengqian and Chen، نويسنده , , Bingqing and Li، نويسنده , , Yan and Cai، نويسنده , , Yan and Zhang، نويسنده , , Tao، نويسنده ,
Abstract :
Microstructure and mechanical properties of Cu46.5Zr47.5Al5Co1 bulk metallic glass (BMG) irritated by laser surface treatment (LST) were investigated. A surface-multilayer glassy composite structure with micron- and nano-scale CuZr (B2) particles was synthesized. The forming mechanism of the unique structure was studied by analyzing the thermal behaviors of glassy matrix and simulating the LST process using finite volume method. Plasticity of the treated rods is enhanced about five times because of the induced multiplication of shear bands and martensitic transformation of B2 precipitates. The LST method is powerful for tailoring BMG composites with controllable position and morphology of second phase.
Keywords :
B. Mechanical properties at ambient temperature , metallic , B. Precipitates , C. Laser processing , D. Microstructure , B. Glasses
