中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 19 No. 1 February 2009 |
（1. School of Materials Science and Engineering, North University of China, Taiyuan 030051, China;
2. National Key Laboratory for Electronic Measurement Technology, North University of China,
Taiyuan 030051, China;
3. School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China）
Abstract:The modification of Fe-14Mn-5Si-9Cr-5Ni shape memory alloys(SMAs) by copper addition was carried out, aiming at further enhancing its corrosion resistance. The results of electrochemical potentiodynamic measurement and immersion test show that copper can remarkably improve the corrosion resistance in Cl− solution. Otherwise, it is found that copper cannot markedly affect the mechanical properties nor the shape memory effect(SME). As for the effects of copper on Fe-Mn-Si based alloys, the austenite strengthening is one of the key factors to improve SME.
Key words: FeMnSiCrNi; shape memory effect; corrosion resistance; copper; austenite strengthening
