论文信息 - The effect of microstructure on the shape recovery of a Fe–Mn–Si–Cr–Ni stainless steel shape memory alloy

The effect of microstructure on the shape recovery of a Fe–Mn–Si–Cr–Ni stainless steel shape memory alloy

Abstract In this work the effect of varying the microstructure on the shape memory properties of a Fe-15Mn-7Si-9Cr-5Ni (wt.%) stainless steel shape memory alloy was evaluated using a simple bend test. The best shape recovery was obtained for a single-phase austenite microstructure and for a two-phase microstructure composed of an austenite matrix and Fe 5 Ni 3 Si 2 type intermetallic grain boundary phase. The maximum shape recovery was achieved at the reversion temperature of 600 °C and when the pre-stain was less than 2%.

Bikas C. Maji | B. Maji | M. Krishnan | Madangopal Krishnan

[1] C. M. Wayman,et al. Development of Fe-based shape memory alloys associated with face-centered cubic-hexagonal close-packed martensitic transformations: Part I. shape memory behavior , 1992 .

[2] P. McCormick,et al. Shape Memory in an Fe-Mn-Si Alloy , 1991 .

[3] C. M. Wayman,et al. Development of Fe-based shape memory alloys associated with face-centered cubic-hexagonal close-packed martensitic transformations: Part III. microstructures , 1992 .

[4] A. Sato,et al. In-situ Observation of Partial Dislocation Motion during γ→ε Transformation in a Fe–Mn–Si Shape Memory Alloy , 1992 .

[5] C. M. Wayman,et al. On secondary variants formed at intersections of ϵ martensite variants , 1992 .

[6] Huijun Li,et al. Factors influencing shape memory effect and phase transformation behaviour of Fe–Mn–Si based shape memory alloys , 1999 .