TY - JOUR
T1 - Ferrous polycrystalline shape-memory alloy showing huge superelasticity
AU - Tanaka, Y.
AU - Himuro, Y.
AU - Kainuma, R.
AU - Sutou, Y.
AU - Omori, T.
AU - Ishida, K.
PY - 2010/3/19
Y1 - 2010/3/19
N2 - Shape-memory alloys, such as Ni-Ti and Cu-Zn-Al, show a large reversible strain of more than several percent due to superelasticity. In particular, the Ni-Ti-based alloy, which exhibits some ductility and excellent superelastic strain, is the only superelastic material available for practical applications at present. We herein describe a ferrous polycrystalline, high-strength, shape-memory alloy exhibiting a superelastic strain of more than 13%, with a tensile strength above 1 gigapascal, which is almost twice the maximum superelastic strain obtained in the Ni-Ti alloys. Furthermore, this ferrous alloy has a very large damping capacity and exhibits a large reversible change in magnetization during loading and unloading. This ferrous shape-memory alloy has great potential as a high-damping and sensor material.
AB - Shape-memory alloys, such as Ni-Ti and Cu-Zn-Al, show a large reversible strain of more than several percent due to superelasticity. In particular, the Ni-Ti-based alloy, which exhibits some ductility and excellent superelastic strain, is the only superelastic material available for practical applications at present. We herein describe a ferrous polycrystalline, high-strength, shape-memory alloy exhibiting a superelastic strain of more than 13%, with a tensile strength above 1 gigapascal, which is almost twice the maximum superelastic strain obtained in the Ni-Ti alloys. Furthermore, this ferrous alloy has a very large damping capacity and exhibits a large reversible change in magnetization during loading and unloading. This ferrous shape-memory alloy has great potential as a high-damping and sensor material.
UR - http://www.scopus.com/inward/record.url?scp=77949817213&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77949817213&partnerID=8YFLogxK
U2 - 10.1126/science.1183169
DO - 10.1126/science.1183169
M3 - Article
C2 - 20299589
AN - SCOPUS:77949817213
VL - 327
SP - 1488
EP - 1490
JO - Science
JF - Science
SN - 0036-8075
IS - 5972
ER -