Stored Mechanical Work in Inhomogeneous Deformation Processes of a Pd-Based Bulk Metallic Glass

• Published in: Metallurgical and materials transactions. A, Physical metallurgy and materials science Vol. 45; no. 5; pp. 2389 - 2392
• Main Authors: Küchemann, Stefan, Wagner, Hannes, Schwabe, Moritz, Bedorf, Dennis, Arnold, Walter, Samwer, Konrad
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01-05-2014; Springer; Springer Nature B.V
• Subjects: Amorphous materials; Applied sciences; Calorimetry; Characterization and Evaluation of Materials; Chemistry and Materials Science; Deformation; Exact sciences and technology; Glass; Glass transition temperature; Materials Science; Metallic glasses; Metallic Materials; Metallurgy; Metals. Metallurgy; Nanotechnology; Palladium; Plastic deformation; Structural Materials; Surfaces and Interfaces; Symposium: Bulk Metallic Glasses X; Thin Films; Ultrasonic testing; Metallic Glass; Bulk Metallic Glass; Surface Acoustic Wave; Inhomogeneous Deformation; Shear Band; Metallic glasses; Amorphous alloy; Deformation
• ISSN: 1073-5623; 1543-1940
• DOI: 10.1007/s11661-013-1898-1

We investigated the effect of anelastic rearrangements in a Pd-based metallic glass during inhomogeneous plastic deformation producing shear bands at room temperature. Therefore, we subjected bulk metallic glasses to uniaxial stresses and characterized the influence of deformation on the global configurational energy state with ultrasonic and calorimetric methods. The results provide evidence that even in an inhomogeneous plastic deformation process at room temperature, a certain amount of energy can be stored which is thermally relaxed below the glass transition temperature.