Influence of Electrical Pulse on Shape Memory Effects and Phase Transition of FeMnSiCrNi Shape Memory Alloy

Xing Jiang Liu; Yan Gao; Jin Gang Qi

doi:10.4028/www.scientific.net/AMR.299-300.562

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 299-300Influence of Electrical Pulse on Shape Memory...

Influence of Electrical Pulse on Shape Memory Effects and Phase Transition of FeMnSiCrNi Shape Memory Alloy

Abstract:

This paper studies the electric-pulse applied in the solidification process of the FeMnSiCrNi shape memory alloy, by applying different pulse frequency and polarity on the FeMnSiCrNi shape memory alloy to improve the shape memory effects. The results show : electric-pulse was conducive to FeMnSiCrNi alloys grain refinement, the alloy can improve the shape memory effect of Compression deformation, the absolute shape recovery rate is improved from 2% to 3.2% which is not treated by the electric-pulse ; when the liquid metal was connected with the anode of the pulse, it is easy to get the columnar grain structure and the column spacing is smaller; when the liquid metal was connected with the cathode of the pulse, the column spacing is larger; Columnar grain is conducive to FeMnSiCrNi alloy specimens compressed shape recovery, it has the smaller column spacing, yet the shape recovery rate is higher; equiaxed is favor in bending back, columnar crystals impede the bending response.

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Periodical:

Advanced Materials Research (Volumes 299-300)

Pages:

562-565

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.299-300.562

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Online since:

July 2011

Authors:

Xing Jiang Liu, Yan Gao, Jin Gang Qi

Keywords:

FeMeSiCrNi Shape Memory Alloy, Phase Transformation, Pulse Electric Modification, ε-Martensite

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