3436 単原子系の形状記憶効果のメカニズム(G03-6 形状記憶合金,G03 材料力学)

概要

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This study examined the shape recovery rates of single atom system metals, such as Ni, Cu, Al, Ag, Mg, Co, Fe, Ti and Zr. First, all metals are treated by heat for the memory of straight shape, and bended to a semi circular shape along the attachment at room temperature. After releasing the initial strain is measured and reheated. The shape recovery ratio is determined by the initial and final strain that is obtained after reheating. In the metals that don't have martensitic transformation, Ni, Cu, Al, Ag did not exhibit shape recovery, while Mg exhibited a slight shape recovery and the recovery ratio was about 3%. In the metals that exhibit martensitic transformation, Co and Ti exhibited shape recovery about 40% and 30%, respectively, and Fe didn't shape recovery. While, the deformation of Zr is very special. The Zr that was heat-treated at lower temperature than the transition exhibited the shape recovery and however, the Zr that was treated at higher temperature exhibited more deforming to the reverse direction to the recovery.
一般社団法人日本機械学会の論文
2006-09-15