A Novel Fe-Mn-Si Shape Memory Alloy With Improved Shape Recovery Properties by VC Precipitation

• Published in: Advanced engineering materials Vol. 11; no. 1-2; pp. 40 - 44
• Main Authors: Dong, Zhizhong, Klotz, Ulrich E., Leinenbach, Christian, Bergamini, Andrea, Czaderski, Christoph, Motavalli, Masoud
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag 01.01.2009; WILEY‐VCH Verlag; Wiley-VCH
• Subjects: Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Deformation and plasticity (including yield, ductility, and superplasticity); Exact sciences and technology; Fe-Mn-Si alloy; Martensitic transformations; Materials science; Mechanical and acoustical properties of condensed matter; Mechanical properties of solids; Phase diagrams and microstructures developed by solidification and solid-solid phase transformations; Physics; shape memory alloy; shape recovery stress; Martensitic transformations; Heat treatments; Shape memory effects; Precipitation; Silicon alloys; Transmission electron microscopy; Shape memory alloy; Transition elements; Manganese alloys; Plasticity; Thermomechanical treatments; Microstructure; Iron base alloys; Elongation (mechanics); Transition element alloys
• ISSN: 1438-1656; 1527-2648
• DOI: 10.1002/adem.200800312

In this work, a nominally new Fe‐Mn‐Si based shape memory alloy with a small amount of VC was designed. After an optimized thermo‐mechanical treatment, a shape recovery of more than 90% after an elongation of 4% could be achieved when the alloys were heated up to 225°C. In addition, high recovery stresses of up to 380 MPa could be obtained after heating to 225°C, whereas 330 MPa were obtained after heating to 160°C.