Laser Shock Peening on Zr-based Bulk Metallic Glass and Its Effect on Plasticity: Experiment and Modeling
Open Access
- 20 May 2015
- journal article
- research article
- Published by Springer Science and Business Media LLC in Scientific Reports
- Vol. 5 (1), 10789
- https://doi.org/10.1038/srep10789
Abstract
The Zr-based bulk metallic glasses (BMGs) are a new family of attractive materials with good glass-forming ability and excellent mechanical properties, such as high strength and good wear resistance, which make them candidates for structural and biomedical materials. Although the mechanical behavior of BMGs has been widely investigated, their deformation mechanisms are still poorly understood. In particular, their poor ductility significantly impedes their industrial application. In the present work, we show that the ductility of Zr-based BMGs with nearly zero plasticity is improved by a laser shock peening technique. Moreover, we map the distribution of laser-induced residual stresses via the micro-slot cutting method and then predict them using a three-dimensional finite-element method coupled with a confined plasma model. Reasonable agreement is achieved between the experimental and modeling results. The analyses of serrated flows reveal plentiful and useful information of the underlying deformation process. Our work provides an easy and effective way to extend the ductility of intrinsically-brittle BMGs, opening up wider applications of these materials.This publication has 40 references indexed in Scilit:
- Fatigue-Induced Damage in Zr-Based Bulk Metallic GlassesScientific Reports, 2013
- Induced multiple heterogeneities and related plastic improvement by laser surface treatment in CuZr-based bulk metallic glassIntermetallics, 2012
- Submicron-scale depth profiling of residual stress in amorphous materials by incremental focused ion beam slottingActa Materialia, 2012
- Parametric Study on Single Shot and Overlapping Laser Shock Peening on Various Metals via Modeling and ExperimentsJournal of Manufacturing Science and Engineering, 2010
- Atomistic free-volume zones and inelastic deformation of metallic glassesNature Materials, 2010
- Temperature rise at shear bands in metallic glassesNature Materials, 2005
- A Finite-Deformation Constitutive Model of Bulk Metallic Glass PlasticityComputational Mechanics, 2005
- On the influence of mechanical surface treatments—deep rolling and laser shock peening—on the fatigue behavior of Ti–6Al–4V at ambient and elevated temperaturesMaterials Science and Engineering: A, 2003
- Difference in compressive and tensile fracture mechanisms of Zr59Cu20Al10Ni8Ti3 bulk metallic glassActa Materialia, 2003
- Shock waves from a water-confined laser-generated plasmaJournal of Applied Physics, 1997