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Monday, September 22, 2008
Abstract
The modification of an Fe-14Mn-5Si-9Cr-5Ni shape memory alloys (SMAs) by copper addition has been carried out in the present paper, aiming at further enhancing its corrosion resistance. The results of electrochemical potentiodynamic measurement and immersion test showed that copper remarkably improved its corrosion resistance behavior in Cl- solution. On the other hand, it was found not to markedly affect the mechanical properties or the shape memory effect (SME). The multiple effects of copper on Fe-Mn-Si based alloys were discussed in view of that the strengthen austenite is one of key factor to improve SME.
Key words: FeMnSiCrNi, shape memory effect, corrosion resistance, strengthen, Copper
The modification of an Fe-14Mn-5Si-9Cr-5Ni shape memory alloys (SMAs) by copper addition has been carried out in the present paper, aiming at further enhancing its corrosion resistance. The results of electrochemical potentiodynamic measurement and immersion test showed that copper remarkably improved its corrosion resistance behavior in Cl- solution. On the other hand, it was found not to markedly affect the mechanical properties or the shape memory effect (SME). The multiple effects of copper on Fe-Mn-Si based alloys were discussed in view of that the strengthen austenite is one of key factor to improve SME.
Key words: FeMnSiCrNi, shape memory effect, corrosion resistance, strengthen, Copper