Improvement of shape memory effect in Fe-Mn-Si alloy by slight tantalum addition
Journal
Materials Science and Engineering A
Journal Volume
518
Journal Issue
1-2
Pages
139-143
Date Issued
2009
Author(s)
Abstract
The effects of slight tantalum (Ta) addition on the microstructures, precipitates, martensitic transformation and shape memory performance of Fe-30Mn-6Si-based alloys were investigated. Experimental results show that the slight Ta addition will increase the c/a ratio of ε martensite, reduce the Ms temperature and improve the alloy's shape recovery ability. After TMT at 650 °C, the alloy's Ms temperature is reduced and lots of (Fe, Mn)3Si and TaC precipitates form. The effective nuclei and well-aligned precipitates within the grain interior after TMT will improve significantly the alloy's shape memory performance. © 2009 Elsevier B.V. All rights reserved.
SDGs
Type
journal article