Journal
MATERIALIA
Volume 6, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.mtla.2019.100280
Keywords
Grain size distribution; Grain boundaries; Phase-field-crystal
Categories
Funding
- FRQNT (Fonds de recherche du Quebec - Nature et technologies)
- NSERC (Natural Sciences and Engineering Research Council Canada)
- SRC [1292.008, 2121.001, 2323.001]
- MRSEC programs of the US NSF [DMR-0520425]
- US NSF [DMS-1719727]
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We present a detailed comparison of multiple statistical grain metrics for previously reported experimental thin film samples of aluminum with 2D simulations obtained from the Phase-Field-Crystal (PFC) model and a Mullins grain boundary motion model. For all these results, universality is observed with respect to the dynamics and initial conditions. This comparison reveals that PFC reproduces geometric metrics such as area and perimeter, but does not capture grain shape and topology as accurately. Similarly, the Mullins model captures the number of sides distribution quite well but not other metrics. Our collective comparison of such measurements underscores the critical importance of the use of multiple metrics for comparison of experiments with all present and future models of grain growth in polycrystalline materials.
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