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Thermal Properties, Microstructure and Microhardness of Cu–Al–Co Shape Memory Alloy System

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Abstract

In this study, the effects of Co content on the crystal structure, transformation temperatures and microstructure of Cu–Al–Co shape memory alloy system were investigated. It was found that Cu–Al–Co alloy system has also 18R type martensitic structure, which is commonly observed in copper-based systems. The transformation temperatures were found to be higher than 250 °C and they do not show a linear increase or decrease with Co content. The microstructural examination revealed the presence of martensite phase and precipitates. It was realized that the size of precipitate increases with increasing Co content. It can be stated that the hardness increased with increasing Co content. All these results point out that increasing Co content increases the strength of Cu–Al–Co shape memory alloy system.

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Acknowledgments

This work is supported by TUBITAK under project no: 106T583 and Firat University Research-Project unit under Project No: FF. 12.08.

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Authors and Affiliations

  1. Faculty of Science, Department of Physics, Superconductivity and Thermal Analysis Laboratory, Gazi University, Ankara, Turkey

    Yıldırım Aydoğdu & Ayşe Aydoğdu

  2. Department of Physics, Sciences Faculty, Firat University, Elazig, Turkey

    Ferdi Kürüm & Mediha Kök

  3. Vocational School of Health Service, Inonu University, Malatya, Turkey

    Zehra Deniz Yakinci

Authors
  1. Yıldırım Aydoğdu
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  2. Ferdi Kürüm
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  3. Mediha Kök
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  4. Zehra Deniz Yakinci
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  5. Ayşe Aydoğdu
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Correspondence to Yıldırım Aydoğdu.

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Aydoğdu, Y., Kürüm, F., Kök, M. et al. Thermal Properties, Microstructure and Microhardness of Cu–Al–Co Shape Memory Alloy System. Trans Indian Inst Met 67, 595–600 (2014). https://doi.org/10.1007/s12666-013-0376-1

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  • DOI: https://doi.org/10.1007/s12666-013-0376-1

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