Homogeneous elongation and distinguishing work hardening in La-based metallic glass composites upon dynamic tension

In-situ La74Al14Cu6Ni6 metallic glass matrix composites exhibit distinct work-hardening capability under quasi-static tension, attributed to the profuse deformation twins. Under dynamic tension, 2% tensile ductility and significant negative strain rate sensitivity (SRS) of the yielding strength was...

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Veröffentlicht in:	Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2018-10, Vol.736, p.329-334
Hauptverfasser:	Dong, J.L., Zhang, T.W., Wang, Z., Shi, X.H., Qiao, J.W., Wang, Z.H., Wu, Y.C.
Format:	Artikel
Sprache:	eng
Schlagworte:	Amorphous materials Deformation Deformation mechanisms Ductility Dynamic tension Elongation Glass matrix composites Metallic glass matrix composites Metallic glasses Particulate composites Shear bands Strain rate sensitivity Work hardening Yield stress
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Beschreibung
Zusammenfassung:	In-situ La74Al14Cu6Ni6 metallic glass matrix composites exhibit distinct work-hardening capability under quasi-static tension, attributed to the profuse deformation twins. Under dynamic tension, 2% tensile ductility and significant negative strain rate sensitivity (SRS) of the yielding strength was revealed. A modified Cooperative-Shear model was employed to explain the negative SRS behavior.
ISSN:	0921-5093 1873-4936
DOI:	10.1016/j.msea.2018.08.107