Macroscopy Lattice Deformation of Martensitic Transformation in Fe-Based Shape Memory Alloy

Abstract:

Macroscopic lattice deformation of martensitic transformation and shape memory effect (SME) were studied by atom force microscopy (AFM), X-ray diffraction and so on. The results showed that stress induced martensitic surface relief was “N”-shaped. The surface relief was parallel distribution when deformation was less than 6%. When relief became to intercross, its height and width were far less than parallel relief in same deformation. Superior heat-recovery was discovered in parallel surface relief. The recovery ratio was very low in intercrossed relief. The macroscopic lattice deformation descends in virtue of relief intercrossed, then recovery process was forbidden, so that recovery ratio was descent.

• Periodical: Applied Mechanics and Materials (Volumes 148-149)
• Pages: 1240-1243
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.148-149.1240
• Online since: December 2011
• Authors: Xiao Ping Lin, Yun Dong, Lian Wei Yang
• Keywords: Atom Force Microscopy (AFM), Martensitic Transformation (MT), Shape Recovery Ratio, Surface Relief

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