Comment on ‘The five- dimensional parameter space of grain boundaries’ by Sutton et al.

Abstract

In their recent paper, Sutton et al. (2015 Proc. R. Soc. A 471, 20150442. ( doi:10.1098/rspa.2015.0442 )) criticized previous metrics in the space of macroscopic boundary parameters and proposed a new function instead. However, some aspects of their analysis need to be clarified. In particular, reasons for introducing one of the criticized metrics are explained, and deficiencies of the new function are indicated.