Dresden 2009 – scientific programme

Parts | Days | Selection | Search | Downloads | Help

MM: Fachverband Metall- und Materialphysik

MM 43: Liquid and Amorphous Metals II

MM 43.5: Talk

Thursday, March 26, 2009, 17:00–17:15, IFW A

Deformation-induced martensitic transformation in Cu-Zr-Al(Ti) bulk metallic glass composites — •Ram Bachchan Kumar, Simon Pauly, Jayanta Das, and Jürgen Eckert — Institut für Komplexe Materialien, IFW Dresden

Plastic deformation of Cu-Zr-(Al, Ti) bulk metallic glass (BMG) composites induces a martensitic phase transformation from the B2 to the B19* CuZr phase. Addition of Ti to binary Cu-Zr increases the temperature above which the B2 CuZr phase becomes stable. This affects the phase formation upon quenching in Cu-Zr-Ti BMG composites. The deformation-induced martensitic transformation is believed to cause the strong work hardening and to contribute to the large compressive deformability with plastic strains up to 15%.