The Effect of Solution Treatment Temperature and Quenching Media Variation in Heat Treatment Process Cu-Zn-Al Shape Memory Alloys on Shape Memory Effect and Microstructures

Authors

Wikan Jatimurti, Department of Materials and Metallurgical Engineering, Institut Teknologi Sepuluh Nopember, IndonesiaFollow
Monica Gayatri K, Department of Materials and Metallurgical Engineering, Institut Teknologi Sepuluh Nopember, IndonesiaFollow
Mavindra Ramadhani, Department of Materials and Metallurgical Engineering, Institut Teknologi Sepuluh Nopember, IndonesiaFollow
Rochman Rochiem, Department of Materials and Metallurgical Engineering, Institut Teknologi Sepuluh Nopember, IndonesiaFollow

Abstract

Shape memory alloys (SMAs) are metal alloys with a reversible ability to recover their shape at a certain temperature after being deformed. This ability referred to as Shape Memory Effect (SME). The application of SMAs such as Ni-Ti and Cu-Zn-Al alloys usually used on automotive, biomedical, etc. The commonly used SMA is Ni-Ti because of its superior SME properties than Cu-Zn-Al, even though the price is quite higher. The SME of Cu-Zn-Al might be improved by increasing the presence of the martensite phase in its microstructure by heat treatment. The heat treatment process given to Cu-21Zn-5Al alloy is a homogenizing, annealing, solution treatment process and quenched with brine solution and dry ice. The heat-treated alloys then undergo several examination trough hardness tests, X-Ray Diffraction, metallography, SME test, and Differential Scanning Calorimetry to determine the SME and microstructure of Cu-21Zn-5Al. From the test results, the specimen with temperature treatment solution of 850oC and quenched by brine solution had the highest SME value by 36.67%. All of the microstructure contained α, β, (martensite) and γ phases.

Recommended Citation

Jatimurti, Wikan; K, Monica Gayatri; Ramadhani, Mavindra; and Rochiem, Rochman (2020) "The Effect of Solution Treatment Temperature and Quenching Media Variation in Heat Treatment Process Cu-Zn-Al Shape Memory Alloys on Shape Memory Effect and Microstructures," Journal of Mechanical Engineering Science and Technology (JMEST): Vol. 4: No. 1, Article 7.
Available at: https://citeus.um.ac.id/jmest/vol4/iss1/7