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Title: Multi-scale modeling of microstructure dependent intergranular brittle fracture using a quantitative phase-field based method

Journal Article · · Computational Materials Science
 [1];  [1];  [1]
  1. Idaho National Lab. (INL), Idaho Falls, ID (United States)

In this study, the fracture behavior of brittle materials is strongly influenced by their underlying microstructure that needs explicit consideration for accurate prediction of fracture properties and the associated scatter. In this work, a hierarchical multi-scale approach is pursued to model microstructure sensitive brittle fracture. A quantitative phase-field based fracture model is utilized to capture the complex crack growth behavior in the microstructure and the related parameters are calibrated from lower length scale atomistic simulations instead of engineering scale experimental data. The workability of this approach is demonstrated by performing porosity dependent intergranular fracture simulations in UO2 and comparing the predictions with experiments.

Research Organization:
Idaho National Laboratory (INL), Idaho Falls, ID (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC07-05ID14517
OSTI ID:
1251417
Alternate ID(s):
OSTI ID: 1397573
Report Number(s):
INL/JOU-15-35001; PII: S092702561500717X
Journal Information:
Computational Materials Science, Vol. 113, Issue C; ISSN 0927-0256
Publisher:
ElsevierCopyright 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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