Effect of Grain Refinement on Shape Memory Properties of Cu-Al-Mn SMAs

U.S. Mallik; Vedamanickam Sampath

doi:10.4028/www.scientific.net/AMR.1101.104

Paper Titles

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Experimental Studies on CNT Reinforced Aluminum Matrix Nanocomposites
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Deformation Behavior of Cu-8wt%Ag Alloy during Equal Channel Angular Pressing
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Vacuum Brazing Incoloy 800 Using the Copper Foil
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Effect of Grain Refinement on Shape Memory Properties of Cu-Al-Mn SMAs
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The Influences of Ru Seed Layer Microstructure on Structural Properties of CoCrPt-SiO₂ Perpendicular Media
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Oxygen Impurity in Germanium Single Crystals Determination by Infrared Spectrometry
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Morphological Transformations of Top Electrodes on YMnO₃ Caused by Filamentary Resistive Switching in the Oxide Matrix
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Phase Transitions and Elementary Processes in Shape Memory Alloys
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1101Effect of Grain Refinement on Shape Memory...

Effect of Grain Refinement on Shape Memory Properties of Cu-Al-Mn SMAs

Abstract:

Cu-12.5 wt.% Al-5 wt.% Mn-(0.05 to 0.2) wt.% B alloys were prepared by ingot metallurgy. The Aluminum and Manganese contents of the alloys were maintained constant, while that of Boron was varied. The alloys were then characterized by subjecting them to compositional analysis, Differential Scanning Caloriemeter and microstructural examination. The shape memory effect and superelasticity of the alloys were determined by bend and tensile tests on the alloy specimens. The investigation reveals that Boron acts as a good grain refiner, resulting in a reduction of about 80% in grain size. The addition of Boron also increases the transformation temperatures by ~ 10^oC, while at the same time decreasing the strain recovery by shape memory effect by 4%, and that by superelasticity by ~ 2%.