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Shape memory alloy is the most practical one metal functional materials , Fe-Mn-Si based alloy has low price and simple process and a series of advantages . However, the shape memory alloy is not high, poor corrosion resistance limits the further expansion of its scope of application . This paper by optimizing the alloy composition design, in situ carbide particles reinforced Fe-Mn-Si based alloys shape memory effect and its related properties were studied . By adding the appropriate amount of Nb, V, Ti, RE (Ce) and other alloying elements , the design of eight typical composition of Fe-Mn-Si based shape memory alloys and used in situ prepared out of the carbide particles dispersed enhanced Fe -Mn-Si based alloys. Using optical microscopy, scanning electron microscopy, X -ray diffraction and other studies of the alloy microstructure and phase composition . Solid solution mainly austenitic alloy matrix and a small amount of thermally induced ε martensite, generate the right amount of heat -induced martensite on Shape Memory Alloy favor. With the pre-deformation increases, alloy structure stress-induced ε martensite began to increase, from a single direction ε martensite martensite becomes cross direction . Tensile deformation method used to study the different process parameters , the different components of alloys shape memory effect . The results show that the solid solution alloy at a certain temperature before deformation (750 ℃) aging treatment (250min) can improve the shape memory effect alloy . Aging treatment at any temperature, the shape recovery alloy increased slowly , at 750 ℃ ??maximum , and then decreased . Alloys with pre-deformation shape recovery ratio decreases the amount of the pre-deformation reaches a maximum of 2% , which component is Fe-14.0Mn-6.0Si-9.0Cr-5.0Ni-0.83Nb-0.045Ce alloy response rate of 96.9% . Thermo-mechanical training can effectively improve the alloy shape recovery rates, especially for the first training to improve the most significant. Fe-Mn-Si -based alloy by adding an appropriate amount of Cr, Ni, Nb and other alloying elements can significantly improve the corrosion resistance in alkaline NaOH solution, the corrosion resistance of stainless steel is 304,316 three times .
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