Effect of Heat Treatment on the Mechanical Properties of FeCoZrWB Bulk Metallic Glass  

作　　者：陶平均 

机构地区：[1]Faculty of Materials and Energy, Guangdong University of Technology

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2012年第3期547-549,共3页武汉理工大学学报（材料科学英文版）

基　　金：Supported by the National Natural Science Foundation of China (Nos.50971046, 50771037, 50371020);the Combination Projects for Guangdong Province and the Ministry of Education (No.2011B090400485);Doctoral Foundation of Guangdong University of Technology(No.093046)

摘　　要：A Fe61Co10Zr5W4B20 bulk metallic glass （BMG） with a diameter of 2 mm was prepared by using copper mould suction casting. The X-ray diffraction （XRD）, differential scanning calorimetry （DSC）, micro-hardness and compression tests were adopted to investigate the structure, thermal stability, especially, the effect of heat treatment on the micro-hardness and compression strength of this BMG. The BMG exhibits micro-hardness of about 1 207 Hv and compression fracture strength of about 1 707.6 MPa. After being annealed below the onset of crystallization temperature, the micro-hardness almost keeps constant. But after being annealed above the peak of crystallization temperature, the micro-hardness increases firstly and then declines gradually with the elongation of annealing time. However, annealed for the same period of time, the micro-hardness will increase with the rise of annealing temperature, while the compression fracture strength will apparently decrease.A Fe61Co10Zr5W4B20 bulk metallic glass （BMG） with a diameter of 2 mm was prepared by using copper mould suction casting. The X-ray diffraction （XRD）, differential scanning calorimetry （DSC）, micro-hardness and compression tests were adopted to investigate the structure, thermal stability, especially, the effect of heat treatment on the micro-hardness and compression strength of this BMG. The BMG exhibits micro-hardness of about 1 207 Hv and compression fracture strength of about 1 707.6 MPa. After being annealed below the onset of crystallization temperature, the micro-hardness almost keeps constant. But after being annealed above the peak of crystallization temperature, the micro-hardness increases firstly and then declines gradually with the elongation of annealing time. However, annealed for the same period of time, the micro-hardness will increase with the rise of annealing temperature, while the compression fracture strength will apparently decrease.

关 键 词：bulk metallic glass heat treatment micro-hardness compression strength 

分 类 号：TG166[金属学及工艺—热处理]