Improvement of shape memory effect in Fe-Mn-Si alloy by Cr and Ni addition
- Academia Sinica, Shenyang (China)
It has been reported that Fe-Mn-Si alloys containing 28-34wt%Mn and 4-6.5wt%Si exhibit a good shape memory behavior with the {gamma}{r_arrow}{epsilon} martensite transformation, when the shape deformation is applied at room temperature. Although the theoretical shear for fcc{r_arrow}hcp transformation implies a possible recoverable shape of 20%, usually in Fe-Mn-Si polycrystalline alloy it is limited to about 2%. The poor corrosion resistance and small shape memory effect (SME) in these alloys are two critical problems for their practical applications. In the present study, Fe-20.0Mn-5.1Si-8.1Cr-4.7Ni (wt%) alloy, which has better SME according to the results reported by Otsuka, is chosen to understand the mechanism of improvement of SME in Fe-Mn-Si alloy by addition of Cr and Ni.
- OSTI ID:
- 92958
- Journal Information:
- Scripta Metallurgica et Materialia, Journal Name: Scripta Metallurgica et Materialia Journal Issue: 12 Vol. 32; ISSN SCRMEX; ISSN 0956-716X
- Country of Publication:
- United States
- Language:
- English
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