Abstract
Fe-Mn-Si-Cr-based shape-memory alloys have excellent properties of formability, shape-memory effect, and low cost. These properties make Fe-Mn-Si-Cr SMAs ideal candidates for the application of pipe coupling and fish plates. In this study, we add slight Rhenium (Re, 0.05-0.3 wt.%) to Fe-30Mn-6Si-5Cr alloys to improve their shape-memory effect. The martensitic transformation, crystal structure, and aging precipitate of the Fe-30Mn-6Si-5Cr-Re alloys are analyzed. The optimization of shape-memory performance of Fe-30Mn-6Si-5Cr-Re alloys can be achieved efficiently by the proper combined treatments of pre-strain, aging, and shape-memory training.
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The authors are pleased to acknowledge the financial support of this research by the National Science Council (NSC), Republic of China, under Grant No. NSC 100-2221-E-002-101-MY3 and NSC 101-2221-E-035-020.
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Lin, KM., Chen, JH., Lin, CC. et al. Optimization of Shape-Memory Effect in Fe-Mn-Si-Cr-Re Shape-Memory Alloys. J. of Materi Eng and Perform 23, 2327–2332 (2014). https://doi.org/10.1007/s11665-014-1071-z
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DOI: https://doi.org/10.1007/s11665-014-1071-z