β Scribed by Y. Watanabe; Y. Mori; A. Sato
No coin nor oath required. For personal study only.
The training effect in Fe-Mn-Si shape-memory alloys has been examined by length change and electrical resistivity measurements. After 13 deformation-heating cycles, it was found that the major recovery took place at a temperature lower by 30 K than the first cycle. Simple thermal cycling also lowered the starting temperature of the reverse transformation and increased the finishing temperature. At the same time, the martensitic transformation temperature was found to increase significantly, for example by 35 K, at the 14th thermal cycle. The characteristics of shape-memory effect affected by development of the homogeneous and fine deformation structure by the thermal cycling are discussed in the light of the training effect.
π SIMILAR VOLUMES
The shape memory behaviour of two Fe-Mn-Si-based alloys has been investigated. Two compositions were studied, i.e. Fe29Mn7Si and Fe29Mn7Si5Cr (numbers indicate mass%). Characterizations of the martensitic transformation and the different structural constituents were performed using optical microscop
Texture evolution and shape memory behaviour were investigated in an Fe-30Mn-4Si (at.%) alloy showing the β₯β martensitic transformation. The alloy was subjected to different rolling and annealing treatments. Texture mapping and shape memory effect were performed in each case. After hot-rolling at 10