Bulk metallic glasses

Effect of heat treatment on the shape of the hyperfine field induction distributions and magnetic properties of amorphous soft magnetic Fe62Co10Y8B20 alloy

“…For the alloy in the state after solidifi cation, in which there was only the amorphous phase, it was possible to determine which type of defect has the greatest impact on the magnetization process in high fi elds. It was found that, in the case of this sample, the process of magnetization is related to the presence of free volume conglomerates, so the relation (a 2 /( 0 H) 2 ) is satisfi ed. These defects are sources of stresses in magnetic fi eld strengths ranging from 0.084 T to 0.25 T.…”

“…Despite energy-intensive efforts, textured metal sheets of FeSi are magnetostrictive alloys with reduced operating capabilities at high frequencies. During the last half-century, a group of materials called the amorphous materials has been created for electrical purposes [1,2]. These materials are characterized by almost zero magnetostriction, low total core losses during the magnetization process, a low value of the coercive fi eld, and high initial magnetic permeability and magnetic saturation [3].…”

Shear transformation zone volume determining ductile–brittle transition of bulk metallic glasses

“…Bulk metallic glasses (BMGs) represent a relatively young class of materials envisaged for many functional and structural applications [1][2][3][4][5]. Crystalline alloys usually have the ductile-to-brittle transition (DBT) temperature that is determined by the dislocation movements.…”

Cooling rate effects on the microstructure and phase formation in Zr51Cu20.7Ni12Al16.3bulk metallic glass

“…The formation of crystalline phases in BMGs can be affected by several factors, namely the cooling rate [3], the composition (including impurity) [4,5] and the processing conditions [6,7]. Among them, the cooling rate is believed to be the most decisive one.…”