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Title: Particle-grain boundary interactions: A phase field study

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USDOE Office of Nuclear Energy (NE)
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Journal Article: Publisher's Accepted Manuscript
Journal Name:
Computational Materials Science
Additional Journal Information:
Journal Volume: 134; Journal Issue: C; Related Information: CHORUS Timestamp: 2018-01-12 07:43:23; Journal ID: ISSN 0927-0256
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Citation Formats

Ahmed, Karim, Tonks, Michael, Zhang, Yongfeng, Biner, Bulent, and El-Azab, Anter. Particle-grain boundary interactions: A phase field study. Netherlands: N. p., 2017. Web. doi:10.1016/j.commatsci.2017.03.025.
Ahmed, Karim, Tonks, Michael, Zhang, Yongfeng, Biner, Bulent, & El-Azab, Anter. Particle-grain boundary interactions: A phase field study. Netherlands. doi:10.1016/j.commatsci.2017.03.025.
Ahmed, Karim, Tonks, Michael, Zhang, Yongfeng, Biner, Bulent, and El-Azab, Anter. 2017. "Particle-grain boundary interactions: A phase field study". Netherlands. doi:10.1016/j.commatsci.2017.03.025.
title = {Particle-grain boundary interactions: A phase field study},
author = {Ahmed, Karim and Tonks, Michael and Zhang, Yongfeng and Biner, Bulent and El-Azab, Anter},
abstractNote = {},
doi = {10.1016/j.commatsci.2017.03.025},
journal = {Computational Materials Science},
number = C,
volume = 134,
place = {Netherlands},
year = 2017,
month = 6

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on March 29, 2018
Publisher's Accepted Manuscript

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  • Grain boundary (GB) migration significantly impacts material behavior. However, GB migration is slowed or even halted by resistive pressure applied by pores or particles. Zener’s original investigation of particle pinning, and subsequent modifications by other researchers, describe the resistive pressure for various spatial distributions of particles with respect to GBs. In this work, we develop a pinning model that considers the impact of the particle size distribution and we verify it by comparing to mesoscale phase field and Monte Carlo simulations. Resistive pressure expressions are developed that are functions of the percentage of GB area covered by particles and ofmore » the particle volume fraction for any spatial distribution of particles. In both expressions, the mean value of the resistive pressure decreases with increasing standard deviation of the particle radius.« less
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