Original scientific paper

https://doi.org/10.17559/TV-20240212001324

A Study of the Effect of Graphene on Fatigue Life of CuAlNi Shape Memory Alloy

Wasiu Ayinde Issa orcid.org/0000-0002-0491-6740 ; Kwara State University, Malete, Nigeria, Department of mechanical engineering, KWASU, P. M. B. 1530, Ilorin, Nigeria *
Hüseyin Çamur ; Near East University, Nicosia, Cyprus, Department of Mechanical Engineering, Faculty of Engineering, 99138 Cyprus
Mahmut Savaş ; Near East University, Nicosia, Cyprus, Department of Mechanical Engineering, Faculty of Engineering, 99138 Cyprus

* Corresponding author.

Abstract

CuAlNi shape memory alloys (SMA) are commonly used in high temperature engineering applications due to their cost-effectiveness and ease of production, as compared to Nickel-Titanium alloys. However, these alloys generally exhibit poor fatigue properties when subjected to cyclic stress. To address this issue, researchers investigated the effect of adding high-purity graphene (C) nanoplatelets on the fatigue life and hardness of CuAlNiSMA. The study found that as the number of stress cycles increased, the stress leading to fatigue failure decreased. Using Design Expert Software version 13.0, current researchers predicted the interaction between fatigue life and the percentage composition of Cu and graphene (C). A novel mathematical model is therefore developed for fatigue life. The model showed a good fit with an R2 of 0.9487, indicating that it can be employed in fatigue life studies of SMAs containing additions like graphene.

Keywords

CuAlNi; CuAlNiC; fatigue life; mechanical properties; shape memory alloy

Hrčak ID:

320401

URI

https://hrcak.srce.hr/320401

Publication date:

31.8.2024.

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