Shear delocalization and crack blunting of a metallic glass containing nanoparticles: In situ deformation in TEM analysis

• Published in: Scripta materialia Vol. 54; no. 11; pp. 1829 - 1834
• Main Authors: Hajlaoui, K., Yavari, A.R., Doisneau, B., LeMoulec, A., Botta F., W.J., Vaughan, G., Greer, A.L., Inoue, A., Zhang, W., Kvick, Å.
• Format: Journal Article
• Language: English
• Published: New York, NY Elsevier Ltd 01-06-2006; Elsevier Science
• Subjects: Applied sciences; Bulk amorphous materials; Exact sciences and technology; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology; Metallic glass; Metals. Metallurgy; Nanocomposites; Plastic deformation; Shear band; Plastic deformation; Nanocomposites; Shear band; Metallic glass; Bulk amorphous materials; Shear; Nanoparticle; In situ; Mechanical properties; Amorphous alloy; Composite material; Metallic glasses; Transmission electron microscopy; Nanocomposite
• ISSN: 1359-6462; 1872-8456
• DOI: 10.1016/j.scriptamat.2006.02.030

By carefully observing shear bands generated by tensile deformation in a transmission electron microscope, we report evidence of shear delocalization in a Cu-based glass containing nanoparticle dispersions. Nanocrystals grow in shear bands, delocalize the shear and deviate and blunt cracks. The results are consistent with matter in operating shear bands behaving like a semi-solid slurry.