The effect of rare earth addition on thermal stability of Fe_(50−x)Cr_(15)Mo_(14)C_(15)B_(6)M_(x)(x=0,2 and M=Y,Gd)is studied.Thermal and structural properties are measured using differential scanning calorimetry and ...The effect of rare earth addition on thermal stability of Fe_(50−x)Cr_(15)Mo_(14)C_(15)B_(6)M_(x)(x=0,2 and M=Y,Gd)is studied.Thermal and structural properties are measured using differential scanning calorimetry and x-ray diffraction,respectively.The microstructure is observed by using a scanning electron microscope,and chemical composition is checked by energy dispersive spectroscopy analysis.The effect of high temperature on the isothermal crystallization of Fe_(50−x)Cr_(15)Mo_(14)C_(15)B_(6)M_(x)(x=0,2 and M=Y,Gd)bulk metallic glass and ribbons is investigated by high-temperature x-ray diffraction.It is found that the crystallization behavior of Fe_(50−x)Cr_(15)Mo_(14)C_(15)B_(6)M_(x)(x=0,2 and M=Y,Gd)bulk metallic glass strongly depends on the annealing temperature.The different crystallization behavior is believed to be due to the different structures that the metallic glass possesses at different temperatures.展开更多
文摘The effect of rare earth addition on thermal stability of Fe_(50−x)Cr_(15)Mo_(14)C_(15)B_(6)M_(x)(x=0,2 and M=Y,Gd)is studied.Thermal and structural properties are measured using differential scanning calorimetry and x-ray diffraction,respectively.The microstructure is observed by using a scanning electron microscope,and chemical composition is checked by energy dispersive spectroscopy analysis.The effect of high temperature on the isothermal crystallization of Fe_(50−x)Cr_(15)Mo_(14)C_(15)B_(6)M_(x)(x=0,2 and M=Y,Gd)bulk metallic glass and ribbons is investigated by high-temperature x-ray diffraction.It is found that the crystallization behavior of Fe_(50−x)Cr_(15)Mo_(14)C_(15)B_(6)M_(x)(x=0,2 and M=Y,Gd)bulk metallic glass strongly depends on the annealing temperature.The different crystallization behavior is believed to be due to the different structures that the metallic glass possesses at different temperatures.
