Thermo-mechanical processing and the shape memory effect in an Fe–Mn–Si-based shape memory alloy
Data(s) |
01/04/2006
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Resumo |
The effect of cold rolling and annealing on the shape memory effect (SME) in an Fe–Mn–Si-based alloy has been studied. It has been found<br />that the SME in these alloys can be significantly increased by the appropriate thermo-mechanical processing (TMP). The optimum conditions<br />were found to be 15% cold rolling followed by annealing at 800 ◦C for 15 min. This produced a total strain recovery of 4.5%. TEM showed that<br />this processing schedule produces a microstructure of evenly spaced, and well defined stacking faults throughout the parent phase. It is shown for<br />the first time that samples processed in this way produce a larger fraction of martensite compared to samples in the as-austenitized condition. It<br />is concluded that the stacking faults induced by TMP act as nucleation sites for martensite formation during deformation. The SME is improved<br />primarily as a result of the increased amount of martensite that is formed in this condition.<br /> |
Identificador | |
Idioma(s) |
eng |
Publicador |
Elsevier S.A. |
Relação |
http://dx.doi.org/10.1016/j.msea.2006.02.009 |
Direitos |
2006, Elsevier B.V. |
Palavras-Chave | #Shape memory #Training #Ferrous alloys #Cold rolling #Annealing |
Tipo |
Journal Article |