TY - JOUR
T1 - Shape memory effect in Fe-Mn-Ni-Si-C alloys with low Mn contents
AU - Min, X. H.
AU - Sawaguchi, T.
AU - Ogawa, K.
AU - Maruyama, T.
AU - Yin, F. X.
AU - Tsuzaki, K.
N1 - Funding Information:
This work was supported financially by the Japan Science and Technology Agency (JST) . The authors would like to thank Dr T. Kikuchi and Mr. M. Koyama of the National Institute for Materials Science (NIMS), Mr. T. Kurita and Ms H. Sakai of Awaji Materia Co., Ltd. for their helpful discussion and support, and the staff of Materials Manufacturing and Engineering Station at NIMS for preparing the alloys.
PY - 2011/6/15
Y1 - 2011/6/15
N2 - An attempt was made to develop a new Fe-Mn-Si-based shape memory alloy from a Fe-17Mn-6Si-0.3C (mass%) shape memory alloy, which was previously reported to show a superior shape memory effect without any costly training treatment, by lowering its Mn content. The shape memory effect and the phase transformation behavior were investigated for the as-solution treated Fe-(17-2. x)Mn-6Si-0.3C- xNi (x = 0, 1, 2, 3, 4) polycrystalline alloys. The shape recovery strain exceeded 2% in the alloys with x = 0-2, which is sufficient for an industrially applicable shape memory effect; however, it suddenly decreased in the alloys between x = 2 and 3 although the significant shape recovery strain still exceeded 1%. In the alloys with x = 3 and 4, X-ray diffraction analysis and transmission electron microscope observation revealed the existence of α′ martensite, which forms at the intersection of the e{open} martensite plates and suppresses the crystallographic reversibility of the γ austenite to e{open} martensitic transformation.
AB - An attempt was made to develop a new Fe-Mn-Si-based shape memory alloy from a Fe-17Mn-6Si-0.3C (mass%) shape memory alloy, which was previously reported to show a superior shape memory effect without any costly training treatment, by lowering its Mn content. The shape memory effect and the phase transformation behavior were investigated for the as-solution treated Fe-(17-2. x)Mn-6Si-0.3C- xNi (x = 0, 1, 2, 3, 4) polycrystalline alloys. The shape recovery strain exceeded 2% in the alloys with x = 0-2, which is sufficient for an industrially applicable shape memory effect; however, it suddenly decreased in the alloys between x = 2 and 3 although the significant shape recovery strain still exceeded 1%. In the alloys with x = 3 and 4, X-ray diffraction analysis and transmission electron microscope observation revealed the existence of α′ martensite, which forms at the intersection of the e{open} martensite plates and suppresses the crystallographic reversibility of the γ austenite to e{open} martensitic transformation.
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U2 - 10.1016/j.msea.2011.03.059
DO - 10.1016/j.msea.2011.03.059
M3 - Article
AN - SCOPUS:79954992702
SN - 0921-5093
VL - 528
SP - 5251
EP - 5258
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
IS - 15
ER -