Details

Autor(en) / Beteiligte

• Tong, Y.
• Qiao, J.C.
• Pelletier, J.M.
• Yao, Y.

Titel

Strong metallic glass: TiZrHfCuNiBe high entropy alloy

Ist Teil von

• Journal of alloys and compounds, 2020-04, Vol.820, p.153119, Article 153119

Ort / Verlag

Lausanne: Elsevier B.V

Erscheinungsjahr

2020

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The viscosity and fragility of TiZrHfCuNiBe high entropy bulk metallic glass (HE-BMG) in the supercooled liquid region were investigated by the strain-rate jump tests. The Newtonian viscosities of HE-BMG are generally smaller than the conventional MGs due to higher mixing entropy. The fragility parameter was estimated to be 38 and implying that the supercooled liquid of HE-BMG is stronger. The interrelationship between fragility index and glass forming ability is discussed. The defects concentration of HE-BMG is much smaller than the traditional MGs, which enhances the difficulty of atomic rearrangement and further improves the stability of the supercooled liquid. •The Newtonian viscosities of HE-BMG are smaller than the conventional MGs.•The supercooled liquid of HE-BMG is stronger.•The defects concentration of HE-BMG is much smaller than the traditional MGs.