Naslov
Properties of thermo-mechanically treated CuZnAl Shape Memory Alloy

Autori
Ćorić, Danko ; Franz, Mladen

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
New Challenges in Heat Treatment and Surface Engineering / Božo Smoljan, Božidar Matijević - Zagreb : Hrvatsko društvo za toplinsku obradu i inženjerstvo površina, 2009, 277-286

ISBN
978-953-96459-9-9

Skup
New Challenges in Heat Treatment and Surface Engineering – Conference in Honour of Prof. Božidar Liščić

Mjesto i datum
Cavtat, Hrvatska, 09.06.2009. - 12.06.2009

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
ausforming treatment; shape memory; mechanical properties; transformation temperatures

Sažetak
Hot rolling of CuZn27Al4 shape memory alloy results in the forming of defects in austenitic crystals. The defects such as dislocation and deformed boundaries of austenitic grains affect both “ classical” material properties and the specific properties related to shape memory. Rolled and quenched alloy (ausforming treatment) shows hardening proportional to the value of introduced deformation. By increasing the level of true plastic deformation not only the yield stress and tensile strength are increased but also the pseudo yield stress thus making the mechanically induced martensitic transformation more difficult. Besides, the ausforming treatment reduces all the transformation temperatures of the austenitic-martensitic reaction, thus expanding the temperature field of pseudo-elasticity. In spite of the hardening, the thermo-mechanically treated CuZn27Al4 alloy retains the pseudo-elastic shape memory so that favourable combination of strength and transformation behaviour can be achieved by the ausforming treatment, which is required in the majority of applications of these alloys.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA