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Title: Laser shock peening on Zr-based bulk metallic glass and its effect on plasticity: Experiment and modeling

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep10789· OSTI ID:1224521
 [1];  [2];  [3];  [4];  [2];  [1];  [4];  [3];  [2]
  1. Purdue Univ., West Lafayette, IN (United States)
  2. Univ. of Tennessee, Knoxville, TN (United States)
  3. Univ. of Illinois at Champaign-Urbana, Champaign, IL (United States)
  4. Univ. of Manchester, Manchester (United Kingdom)

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 excellent 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 analysis of serrated flow reveals plentiful and useful information of the underlying deformation process. As a result, our work provides an easy and effective way to extend the ductility of intrinsically-brittle BMGs, opening up wider applications of these materials.

Research Organization:
Univ. of Tennessee, Knoxville, TN (United States); Univ. of Illinois at Champaign-Urbana, Champaign, IL (United States)
Sponsoring Organization:
USDOE Office of Fossil Energy (FE)
Grant/Contract Number:
FE0011194
OSTI ID:
1224521
Journal Information:
Scientific Reports, Vol. 5; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 51 works
Citation information provided by
Web of Science

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Cited By (5)

Bivariate Fourier-series-based prediction of surface residual stress fields using stresses of partial points journal April 2018
Residual stresses in colloidal gels journal January 2017
Modification of single-crystalline yttria-stabilised zirconia induced by radiation heating from laser-produced plasma journal January 2019
Thermomechanical processing of metallic glasses: extending the range of the glassy state journal June 2016
A comprehensive assessment of laser welding of biomedical devices and implant materials: recent research, development and applications journal January 2020

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