We have investigated the consequences of negative triple junction energy in grain growth. Two and three-dimensional models for total system energy, incorporating varying triple junction energy are developed. These models show that there is a decrease in overall system energy with grain size corresponding to the driving force for grain growth. Although the free energy available to drive grain growth is reduced under some conditions, it is never removed for any reasonable values of the triple junction energy.
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Gupta, G.K., King, A.H. Exploring The Consequences of Negative Triple Junction Energy. MRS Online Proceedings Library 703, 113 (2001). https://doi.org/10.1557/PROC-703-V11.3