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Low-temperature fracture toughness of some iron, nickel-based metallic glass ribbons

Research paper by V. Ocelik, P. Diko, K. Csach, V. Hajko, V. Z. Bengus, E. D. Tabachnikova, E. B. Korolkova, P. Duhaj

Indexed on: 01 Oct '87Published on: 01 Oct '87Published in: Journal of Materials Science



Abstract

The critical stress intensity factor of Fe40Ni40B20, Ni80Si10B10 and Ni80Si5B15 metallic glass ribbons was measured at temperatures 4.2 to 300 K. The low-temperature embrittlement for Ni-Si-13 glasses was not investigated. The low-temperature embrittlement of Fe40Ni40B20 glass depends on the structural relaxation and is connected with a change from vein pattern fracture surface morphology through chevron morphology up to cleavage.