Nanoindentation/atomic force microscopy analyses of epsilon-martensitic transformation and shape memory effect in Fe-28Mn-6Si-5Cr alloy

作者：Sekido K; Ohmura T^*; Sawaguchi T; Koyama M; Park H W; Tsuzaki K

来源：Scripta Materialia, 2011, 65(11): 942-945.

DOI：10.1016/j.scriptamat.2011.08.010

• Nanoindentation
• Atomic force microscopy
• Shape memory alloys
• Martensitic phase transformation
• High-manganese steel

Nanoindentation was conducted to investigate the stress-induced epsilon-martensitic transformation behavior and the shape memory effect in a Fe-28Mn-6Si-5Cr alloy. The shape memory effect was evaluated from the volume change in an indent mark caused by annealing measured by atomic force microscopy. Using the load-displacement (P-h) data obtained from nanoindentation, the plot of P/h vs. h showed two types of slopes, corresponding to the epsilon-martensitic transformation and slip deformation, and exhibited a correlation with the shape recovery ratio.

• 出版日期2011-12