CU-BASED DUCTILE BULK METALLIC GLASS AND A PROCESS FOR THE PREPARATION OF THE SAME

摘要

THIS INVENTION RELATES TO A PROCESS FOR THE DEVELOPMENT OF MONOLITHIC CU-BASED BULK METALLIC GLASS EXHIBITING EXCELLENT MECHANICAL PROPERTIES SUCH AS HIGH STRENGTH AND HIGH COMPRESSIVE PLASTIC STRAIN OBTAINED THROUGH MINOR ADDITION OF HIGH MELTING POINT ELEMENT, NIOBIUM (NB), IN CU-ZR-TI BULK METALLIC GLASS. CU-BASED BMG HAVING CU CONTENT RANGING FROM 50 TO 60 AT %, REPORTED IN THE PRESENT INVENTION EXHIBITED COMPRESSIVE PLASTIC STRAIN OF 20% AND COMPRESSIVE STRENGTH 2200 MPA. FRACTURED SAMPLE EXHIBITED THE OCCURRENCE OF A LARGE NUMBER OF SHEAR BANDS WHICH IMPROVED THE COMPRESSIVE PLASTIC STRAIN OF THE MATERIAL OF THE PRESENT INVENTION.