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One of the most popular methods for grain boundary (GB) energy determination involves the use of the Herring equation, which describes the capillary equilibrium along junction of three GBs. This equation includes the so-called torque terms, which are related to the variation of GB energy with GB plane orientation. It is often accepted that torque terms are negligible for all GBs except for coherent twins, which makes it possible to use the Herring equation in a simplified form [1]. However, this assumption has not yet been unequivocally confirmed experimentally.