Advertisement

Journal of Thermal Analysis and Calorimetry

, Volume 133, Issue 2, pp 845–850 | Cite as

Examination of phase changes in the CuAl high-temperature shape memory alloy with the addition of a third element

  • Mediha Kök
  • Şahin Ata
  • Zehra Deniz Yakıncı
  • Yıldırım Aydoğdu
Article

Abstract

In the present study, a ternary CuAl-based alloy was produced by adding 2% chromium, niobium, titanium and hafnium instead of 2% copper from the Cu88Al12 (% in mass) shape memory alloy, and the phase changes in the alloy were examined. As a result of the X-ray analyses performed at room temperature, the α phase, which is rich in copper, was detected in the main sample, i.e., the Cu88Al12 alloy, and the β 1 1 and γ 1 ı phases were detected in the four of the Cu86Al12Cr2, Cu86Al12Nb2, Cu86Al12Ti2 and Cu86Al12Hf2 alloys. All of phases were clearly seen in SEM images. As a result of the mapping performed during chemical analysis, it was observed clearly that there appeared a precipitation phase in the Cu86Al12Cr2, Cu86Al12Nb2, Cu86Al12Ti2 alloys due to the additions. It was also observed that the additions were effective in forming a martensite phase in the Cu88Al12 alloy. In differential scanning calorimetry (DSC) measurements, which were taken to support these measurements, no martensitic phase transformations were detected in dual primary alloy (Cu88Al12); however, a clear martensite phase transformation was detected in ternary alloys (Cu86Al12Cr2, Cu86Al12Nb2, Cu86Al12Ti2 and Cu86Al12Hf2) in the first DSC measurement. Then, when the DSC cycle was applied to the ternary alloy, both the austenite transformation and martensite transformation temperatures were clearly seen, and it was claimed that all the alloys showed high-temperature shape memory alloy properties.

Keywords

CuAl-based Element addition Cu-rich phase DSC cycle High-temperature shape memory (HTSM) 

Notes

Acknowledgements

This work was supported by the Management Unit of the Scientific Research Projects of Firat University (FUBAP) (Project Number: FF.16.43).

References

  1. 1.
    Gustmann T, dos Santos JM, Gargarella P, Kühn U, Van Humbeeck J, Pauly S. Properties of Cu-based shape-memory alloys prepared by selective laser melting. Shape Mem Superelasticity. 2017;3–1:24–36.CrossRefGoogle Scholar
  2. 2.
    Stipcich M, Romero R. β-Phase thermal degradation in Zr-added Cu–Zn–Al shape memory alloy. J Therm Anal Calorim. 2017;129–1:201–7.CrossRefGoogle Scholar
  3. 3.
    Alaneme KK, Eloho AO. Reconciling viability and cost-effective shape memory alloy options—a review of copper and iron based shape memory metallic systems. Eng Sci Tech Int J. 2016;19–3:1582–92.CrossRefGoogle Scholar
  4. 4.
    Asanović V, Kemal D. The mechanical behavior and shape memory recovery of Cu–Zn–Al alloys. Metalurgija. 2007;13–1:59–64.Google Scholar
  5. 5.
    Wang Z, Xiaotao Z, Yongquing F. Review on the temperature memory effect in shape memory alloys. Int J Smart Nano Mater. 2011;2–3:101–19.CrossRefGoogle Scholar
  6. 6.
    Zeller S, Gnauk J. Shape memory behaviour of Cu–Al wires produced by horizontal in-rotating-liquid-spinning. Mater Sci Eng A. 2008;481:562–6.CrossRefGoogle Scholar
  7. 7.
    Kayali N, Zengin R, Adiguzel O. Influence of aging on transformation characteristics in shape memory CuZnAl alloys. Metall Mater Trans A. 2000;31–2:349–54.CrossRefGoogle Scholar
  8. 8.
    Cuniberti A, LujánCastro M, Stipcich M, Romero R. Influence of Cd addition on the phase transformations of β Cu–Al alloys. Phase Trans. 2004;77–11:911–20.CrossRefGoogle Scholar
  9. 9.
    Silva RAG, Cuniberti A, Stipcich M, Adorno AT. Effect of Ag addition on the martensitic phase of the Cu–10 wt% Al alloy. Mater Sci Eng A. 2007;456–1:5–10.CrossRefGoogle Scholar
  10. 10.
    Adorno AT, Silva RAG. Ageing behavior in the Cu–10 wt% Al and Cu–10 wt% Al–4 wt% Ag alloys. J Alloy Compd. 2009;473–1:139–44.CrossRefGoogle Scholar
  11. 11.
    Šimšić ZS, et al. Thermal analysis and microstructural investigation of Cu-rich alloys in the Cu–Al–Ag system. J Alloy Compd. 2014;612:486–92.CrossRefGoogle Scholar
  12. 12.
    Fernández J, Isalgue A, Franch R. Effect of thermal cycling on CuAlAg shape memory alloys. Mater Today Proc. 2015;2:S805–8.CrossRefGoogle Scholar
  13. 13.
    Wang CP, Su Y, Yang SY, Shi Z, Liu XJ. A new type of Cu–Al–Ta shape memory alloy with high martensitic transformation temperature. Smart Mater Struct. 2013;23–2:025018.Google Scholar
  14. 14.
    Lelatko J, Morawiec H. The effect of Ni, Co and Cr on the primary particle structure in Cu–Al–Nb-X shape memory alloys. Mater Chem Phys. 2003;81–2:472–5.CrossRefGoogle Scholar
  15. 15.
    Lelatko J, Morawiec H. The modeling of the deformation behavior of Cu–Al–Nb-X shape memory alloys containing primary particles. Mater Sci Eng A. 2008;481:684–7.CrossRefGoogle Scholar
  16. 16.
    Liu C, Mu HW. Martensitic transformation and shape memory recovery property of Cu 72 Al 26.5 Nb 1.5 high temperature shape memory alloy. J Alloy Compd. 2010;508–2:329–32.CrossRefGoogle Scholar
  17. 17.
    Aydoğdu Y, Kürüm F, Kök M, Yakinci ZD, Aydoğdu A. Thermal properties, microstructure and microhardness of Cu–Al–Co shape memory alloy system. Trans Ind Inst Met. 2014;67–4:595–600.CrossRefGoogle Scholar
  18. 18.
    Cenoz I, Gutierrez M. Phase transformations in Cu–Al alloy. Met Sci Heat Treat. 2011;53–6:265–9.CrossRefGoogle Scholar
  19. 19.
    Chentouf SM, Bouabdallah M, Cheniti H, Keddam M. Stable phase formation in a 85.67 wt% Cu-9.9 wt% Al-4.43 wt% Ni shape memory alloy. In: European symposium on martensitic transformations, EDP Sciences; 2009, p. 05005.Google Scholar
  20. 20.
    Yang S, Su Y, Wang C, Liu X. Microstructure and properties of Cu–Al–Fe high-temperature shape memory alloys. Mater Sci Eng B. 2014;185:67–73.CrossRefGoogle Scholar
  21. 21.
    Adorno AT, Silva RAG, Carvalho TM. (α + γ1) Complex phase formation in the Cu-10 mass% Al-6 mass% Ag alloy. J Therm Anal Calorim. 2009;97–1:127.CrossRefGoogle Scholar
  22. 22.
    Magdalena AG, Adorno AT, Carvalho TM, Silva RAG. β Phase transformations in the Cu–11 mass% Al alloy with Ag additions. J Therm Anal Calorim. 2011;106–2:339–42.CrossRefGoogle Scholar
  23. 23.
    Pascal NS, Giordana MF, Napolitano F, Esquivel MR, Zelaya E. Thermal stability analysis of Cu-11.8 wt% Al milled samples by TEM and HT-XRD. Adv Powder Technol. 2017;28–10:2605–12.CrossRefGoogle Scholar
  24. 24.
    Soliman HN, Habib N. Effect of ageing treatment on hardness of Cu-12.5 wt% Al shape memory alloy. Ind J Phys. 2014;88–8:803–12.CrossRefGoogle Scholar
  25. 25.
    Choi JY, Sia NN. Effect of annealing and initial temperature on mechanical response of a Ni–Ti–Cr shape-memory alloy. Mater Sci Eng A. 2006;432–1:100–7.CrossRefGoogle Scholar
  26. 26.
    Santos CMA, Adorno AT, Paganotti A, Silva CCS, Oliveira AB, Silva RAG. Phase stability in the Cu-9 wt% Al-10 wt% Mn-3 wt% Ag alloy. J Phys Chem Solid. 2017;104:145–51.CrossRefGoogle Scholar
  27. 27.
    Braz Fernandes FM, Mahesh KK, Andersan dos SP. Shape memory alloys—processing, characterization and applications. Chapter 1. Thermomechanical treatments for Ni–Ti alloys. ISBN 978-953-51-1084-2, Published: April 3 2013.Google Scholar

Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2018

Authors and Affiliations

  • Mediha Kök
    • 1
  • Şahin Ata
    • 1
  • Zehra Deniz Yakıncı
    • 2
  • Yıldırım Aydoğdu
    • 3
  1. 1.Department of Physics, Faculty of ScienceFırat UniversityElazigTurkey
  2. 2.Vocational School of Health ServiceInonu UniversityMalatyaTurkey
  3. 3.Department of Physics, Faculty of ScienceGazi UniversityElazigTurkey

Personalised recommendations