Effects of Aging Temperature on Microstructure and Thermal Properties of CuAlMn Shape Memory Alloys

Canbay, Canan Aksu; Güdeloğlu, Samet

doi:10.19113/sdufbed.49794

Cited by 2 publications

(2 citation statements)

References 16 publications

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“…Canbay et al 14 characterised ternary 82.20 Cu -12.67 Al -3.13 Mn (wt.%), and obtained presence of both types of 18R and 2H martensite phases. In addition, Canbay et al 15 mentioned that aging process has significant effect on transformation temperatures. The alloys show SME because the martensite re-orientation under external force causes a thermoelastic martensite transformation.…”

Section: Effect Of Heat Treatment On Microstructure and Thermal Prope...mentioning

confidence: 99%

Effect of Heat Treatment on Microstructure and Thermal Properties of Cu-based Shape Memory Ribbons

Kožuh

Ivanić

Grgurić

et al. 2022

Kemija U Industriji

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The aim in this work was to investigate the change in microstructure, phase transformation temperatures, and thermal properties due to the quenching of the investigated Cu-Al-Mn and Cu-Al-Mn-Ti alloys in ribbon form. This paper presents the results of microstructure analysis and thermal properties of Cu-Al-Mn and Cu-Al-Mn-Ti shape memory alloys produced in ribbon form by melt spinning technique. The microstructural analysis was carried out before and after quenching. After casting of the investigated alloys, annealing at 900 °C for 30 min was performed, followed by water quenching. The microstructural analysis was carried out by optical and scanning electron microscopy equipped with an energy dispersive spectrometer and by X-ray diffractometer. Thermodynamic calculation of a ternary Cu-Al-Mn system in equilibrium condition was performed using Thermo-Calc 5 software. Phase transformation temperatures were determined by differential scanning calorimetry and electrical resistance measuring. The results of microstructural analysis show the presence of martensite microstructures before and after quenching in the Cu-Al-Mn alloy, while in the Cu-Al-Mn-Ti alloy martensite microstructure exists only after quenching. Phase transformation temperatures decreased after quenching and titanium addition.

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Section: Effect Of Heat Treatment On Microstructure and Thermal Prope...mentioning

confidence: 99%

Effect of Heat Treatment on Microstructure and Thermal Properties of Cu-based Shape Memory Ribbons

Kožuh

Ivanić

Grgurić

et al. 2022

Kemija U Industriji

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“…In addition to the compositional effect, manufacturing and subsequent heat treatment parameters have an impact on the phase transformation of copper based SMAs [9,10]. For instance, the increase of transformation temperatures by increasing aging temperature leading to a deterioration of the shape memory behavior was reported for Cu-Al-Mn alloy system [11]. Furthermore, Ozkul et al showed that the aging period is not quite effective on the reverse and forward transformation temperature, even though, influencing the transformation enthalpy [12].…”

Section: Introductionmentioning

confidence: 99%

Effects of Aging on the Microstructure and Phase Transformation Behavior of Cu-Al-Mn Shape Memory Alloy

Seyedmohammadi

Radi

Yapıcı

2021

KEM

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In the present work, the effects of artificial aging treatment on the transformation temperatures and hardness of Cu-Al-Mn shape memory alloy have been investigated. The aging processes have been performed on the one-time re-melted and 90% rolled samples. Differential scanning calorimetry reveals that reverse transformation is present for the re-melted sample which is aged at 400°C. However, in 90% rolled condition, this transformation takes place at 200°C and 300°C. Hardness examination shows that the aged specimens possess higher values in hardness in comparison to un-aged samples at all studied temperatures. Although, the peak-aged condition was demonstrated at 300°C for the re-melted sample, the rolled sample displayed increased hardness levels up to 500°C. Based on the DSC measurements and microstructural observations, it can be asserted that the thermo-mechanical processing including rolling plus aging at 300°C provides favorable transformation characteristics for shape memory behavior.

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Effects of Aging Temperature on Microstructure and Thermal Properties of CuAlMn Shape Memory Alloys

Cited by 2 publications

References 16 publications

Effect of Heat Treatment on Microstructure and Thermal Properties of Cu-based Shape Memory Ribbons

Effect of Heat Treatment on Microstructure and Thermal Properties of Cu-based Shape Memory Ribbons

Effects of Aging on the Microstructure and Phase Transformation Behavior of Cu-Al-Mn Shape Memory Alloy

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