Naslov
Microstructural characterization of Cu82.3Al8.3Mn9.4 shape memory alloy after rolling

Autori
Gojić, Mirko ; Kožuh, Stjepan ; Ivanić, Ivana ; Selanec, Magdalena ; Holjevac Grgurić, Tamara ; Kosec, Borut ; Ćubela, Diana ; Beganović, Omer

Izvornik
Metallurgical and materials engineering (2217-8961) 23 (2017), 3; 281-289

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
shape memory alloy (SMA) ; continuously casting ; microstructure ; heat treatment ; rolling

Sažetak
In this paper, the microstructure of Cu82.3Al8.3Mn9.4 (in wt. %) shape memory alloy after hot and cold rolling was investigated. The Cu82.3Al8.3Mn9.4 alloy was produced by a vertical continuous casting method in the form a cylinder rod of 8 mm in diameter. After the casting, hot and cold rolling was performed. By hot rolling a strip with a thickness of 1.75 mm was obtained, while by cold rolling a strip with a thickness of 1.02 mm was produced. After the rolling process, heat treatment was performed. Heat treatment was carried out by solution annealing at 900 °C held for 30 minutes and water quenched immediately after heating. The microstructure characterization of the investigated alloy was carried out by optical microscopy (OM), scanning electron microscopy (SEM) equipped with a device for energy dispersive spectroscopy (EDS). Phase transformation temperatures and fusion enthalpies were determined by differential scanning calorimetry (DSC) method. The homogenous martensite microstructure was confirmed by OM and SEM micrographs after casting. During rolling the two-phase microstructure occurred. Results of DSC analysis showed martensite start (Ms), martensite finish (Mf), austenite start (As) and austenite finish (Af) temperatures.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo, Metalurgija

Napomena
Glavni autor: Stjepan Kožuh, Ivana Ivanić

POVEZANOST RADA