An investigation was made of the effect of stacking-fault free energy on the magnitude of the indentation size effect of pure fcc metals using nano-indentation. It was found that 5N aluminum, had a stacking-fault energy of about 200mJ/m2.

The Role of Stacking Fault Energy on the Indentation Size Effect of FCC Pure Metals and Alloys. D.E.Stegall, M.A.Mamun, A.A.Elmustafa: Materials Research Society Symposium Proceedings, 2012, 1424, 7-12