Naslov
SEM analysis of fracture surface of the CuAlNi shape memory alloy after heat treatment

Autori
Ivanić, Ivana ; Kožuh, Stjepan ; Vračan, Andrej ; Kosec, Borut ; Gojić, Mirko

Izvornik
Annals of the Faculty engineering Hunedoara (1584-2665) 16 (2018), 1; 183-186

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

Ključne riječi
shape memory alloys ; CuAlNi ; heat treatment ; fracture analysis ; microstructure

Sažetak
CuAlNi shape memory alloys (SMA) belongs to a group of alloys that exhibit shape memory effect which is related to the thermoelastic martensitic transformation. In this paper the influence of heat treatment (quenching and tempering) on fracture surface morphology of the CuAlNi SMA after tensile testing was examined by scanning electron microscope. It is observed a small difference on alloys mechanical properties and surface morphology between casted and quenched (850°C/60’/WQ) condition. But after tempering at 300 °C/60’/WQ the mechanical properties and surface morphology is drastically changed. In both states (casted and quenched) can be noticed a transgranular type of fracture showing that the small amount of plastic deformation occurred, and along long oriented grains it is observed an intergranular type of fracture. After tempering the CuAlNi sample shows mostly intergranular type of fracture after tensile testing.

Izvorni jezik
Engleski

Znanstvena područja
Metalurgija

Napomena
Rad je prezentiran na 13th International Conference
on Accomplishments in Mechanical and Industrial
Engineering – DEMI 2017 u Banja Luci, BIH, koja je
održana od 26.-27.5.2017.

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