Abstract
We have recently reported that the ductility of Fe-Mn-Si shape memory alloys can be greatly improved by replacing a part of Si with a small amount of Al without decaying the shape memory effect. Enhancement of the ductility is ascribed to the introduction of deformation twins in addition to stress-induced hep martensite on loading. In this work, the shape recovery strains and recovery temperatures were measured for Fe-30Mn-5Si-1A1 alloy and corrosion-resistant Fe-28Mn-5Si-1A1-5Cr alloy. The maximum shape recovery strain of Al-added alloys exceeded 2%, which was comparable to those of the alloys without Al addition. The initial tensile strain required for obtaining the maximum shape recovery strain was about 8% in Al-added alloys, which was about twice larger than that of non-Al alloys, probably due to the intrusion of deformation twins. It was also found that the shape recovery finishing temperature was as low as 470K.
| Original language | English |
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| Title of host publication | SMST-2007 - Proceedings of the International Conference on Shape Memory and Superelastic Technologies |
| Pages | 653-658 |
| Number of pages | 6 |
| DOIs | |
| Publication status | Published - Dec 1 2008 |
| Externally published | Yes |
| Event | International Conference on Shape Memory and Superelastic Technologies, SMST-2007 - Tsukuba, Japan Duration: Dec 2 2007 → Dec 5 2007 |
Other
| Other | International Conference on Shape Memory and Superelastic Technologies, SMST-2007 |
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| Country/Territory | Japan |
| City | Tsukuba |
| Period | 12/2/07 → 12/5/07 |
All Science Journal Classification (ASJC) codes
- Mechanics of Materials