Mechanical Properties of Soft Magnetic (Fe0.76Si0.096B0.084P0.06)(100-x)Cu-x (x=0 and 0.1) Bulk Glassy Alloys

作者：Li Xue^*; Makino Akihiro; Yubuta Kunio; Kato Hidemi; Inoue Akihisa

来源：Materials Transactions, 2009, 50(6): 1286-1289.

DOI：10.2320/matertrans.ME200833

• iron-based bulk glassy alloy
• plasticity
• multiple shear bands
• alpha-iron

Fe-based bulk glassy alloys (BGAs) are known to have great potential for structural applications because of their high strength and relatively low material cost. However, their brittle nature hinders further applications. We have recently developed a new ductile (Fe0.76Si0.096B0.084P0.06)(99.9)Cu-0.1 BGA with a strength of 3.3 GPa and a large plastic strain of about 4% in compression. A well developed vein pattern on the fracture surface and highly-dense multiple shear bands on the surface of the specimen were observed. A large number of alpha-Fe like clusters (<10 nm) are found to disperse in the matrix glass. These clusters possibly act as nucleation sites for the alpha-Fe nanocrystallization in slipping shear bands dynamically. This results in development of the multiple shear bands causing highly improved plasticity in the (Fe0.76Si0.096B0.084P0.06)(99.9)Cu-0.1 BGA. [doi:10.2320/matertrans.ME200833]

• 出版日期2009-6