Plastic flow in dynamic compression of a Zr-based bulk metallic glass

Autor:	F. X. Liu, D. C. Qiao, W. H. Jiang, Peter K. Liaw, Hahn Choo
Rok vydání:	2006
Předmět:	Amorphous metal Materials science Mechanical Engineering Alloy Stress–strain curve engineering.material Plasticity Condensed Matter Physics Amorphous solid Shear (geology) Mechanics of Materials Shear stress engineering General Materials Science Dynamic range compression Composite material
Zdroj:	Journal of Materials Research. 21:1570-1575
ISSN:	2044-5326 0884-2914
Popis:	Using geometrically constrained specimens, the plastic flow behaviors of the as-cast and the relaxed Zr52.5Cu17.9Ni14.6Al10.0Ti5.0 bulk metallic glass in the dynamic compression were investigated. Both alloys exhibit a significant plasticity in the dynamic compression. The plastic deformation in both alloys is still inhomogeneous, which is characterized by the serrated plastic flow and the formation of shear bands. Free volumes affect the shear banding and the plastic flow. The reduced free volume results in the deviation of the shear banding direction from the maximum shear stress. The relaxed alloy exhibits the obvious stress overshoot, which is consistent with the theoretical prediction using a free volume model.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::210f41c9e5191bc2dc9a3b45fba34f1d https://doi.org/10.1557/jmr.2006.0194 Zobrazit plný text záznamu Full text from SpringerLink