Effects of quenching rate on properties and structures of amorphous alloys

Abstract

The properties and structures of Fe−ΣXi, NiP and selenium amorphous materials as a function of quenching rate during formation were studied by Young's modulus, hardness, differential scanning calorimetry, temperature and high resolution electron microscopy. A bending test was used for identifying the embrittlement of the ribbons. The quenching rates corresponding to the strip speeds were measured directly by infrared thermal photography. The results indicate that mechanical properties of amorphous metal are strongly related to the defects in the structures, and that physical properties are greatly influenced by the chemical and topological short-range order which corresponds to the metastable phase structures in amorphous metals.