TY - GEN
T1 - Shape memory characteristics of Fe-30Mn-5Si-1Al and Fe28Mn-5Si-1 AI-5Cr alloys
AU - Koyama, M.
AU - Murakami, M.
AU - Ogawa, K.
AU - Kikuchi, T.
AU - Sawaguchi, S.
PY - 2008/12/1
Y1 - 2008/12/1
N2 - We have recently reported that the ductility of Fe-Mn-Si shape memory alloys can be greatly improved by replacing a part of Si with a small amount of Al without decaying the shape memory effect. Enhancement of the ductility is ascribed to the introduction of deformation twins in addition to stress-induced hep martensite on loading. In this work, the shape recovery strains and recovery temperatures were measured for Fe-30Mn-5Si-1A1 alloy and corrosion-resistant Fe-28Mn-5Si-1A1-5Cr alloy. The maximum shape recovery strain of Al-added alloys exceeded 2%, which was comparable to those of the alloys without Al addition. The initial tensile strain required for obtaining the maximum shape recovery strain was about 8% in Al-added alloys, which was about twice larger than that of non-Al alloys, probably due to the intrusion of deformation twins. It was also found that the shape recovery finishing temperature was as low as 470K.
AB - We have recently reported that the ductility of Fe-Mn-Si shape memory alloys can be greatly improved by replacing a part of Si with a small amount of Al without decaying the shape memory effect. Enhancement of the ductility is ascribed to the introduction of deformation twins in addition to stress-induced hep martensite on loading. In this work, the shape recovery strains and recovery temperatures were measured for Fe-30Mn-5Si-1A1 alloy and corrosion-resistant Fe-28Mn-5Si-1A1-5Cr alloy. The maximum shape recovery strain of Al-added alloys exceeded 2%, which was comparable to those of the alloys without Al addition. The initial tensile strain required for obtaining the maximum shape recovery strain was about 8% in Al-added alloys, which was about twice larger than that of non-Al alloys, probably due to the intrusion of deformation twins. It was also found that the shape recovery finishing temperature was as low as 470K.
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U2 - 10.1361/cp2007smst653
DO - 10.1361/cp2007smst653
M3 - Conference contribution
AN - SCOPUS:65649116198
SN - 9780871707222
T3 - SMST-2007 - Proceedings of the International Conference on Shape Memory and Superelastic Technologies
SP - 653
EP - 658
BT - SMST-2007 - Proceedings of the International Conference on Shape Memory and Superelastic Technologies
T2 - International Conference on Shape Memory and Superelastic Technologies, SMST-2007
Y2 - 2 December 2007 through 5 December 2007
ER -