Ponašanje termomehanički obrađene CuZnAl-SEPO

Ćorić, Danko and Franz, Mladen (2012) Ponašanje termomehanički obrađene CuZnAl-SEPO. = Behaviour of thermo-mechanically treated CuZnAl-SMA. Tehnički vjesnik : znanstveno-stručni časopis tehničkih fakulteta Sveučilišta u Osijeku, 19 (3). pp. 595-600. ISSN 1330-3651. Vrsta rada: ["eprint_fieldopt_article_type_article" not defined]. Kvartili JCR: Q3 (2012). Točan broj autora: 2.

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Abstract

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.

Item Type: Article (["eprint_fieldopt_article_type_article" not defined])
Keywords (Croatian): Ausforming treatment; Austenitic; CuZnAl alloys; Material property; Pseudoelasticity; Quenched alloys; Shape memory; Transformation temperatures; Alloys; Austenite; Cerium alloys; Defects; Dislocations (crystals); Elasticity; Hardening; Hot rolling; Martensitic transformations; Mechanical properties; Yield stress; Austenitic transformations
Subjects: TECHNICAL SCIENCE
Divisions: 1000 Department of Materials > 1010 Chair of Materials and Tribology
Indexed in Web of Science: Yes
Indexed in Current Contents: No
Quartiles: Q3 (2012)
Citations SCOPUS: 0 (09.03.2016.)
Date Deposited: 30 Apr 2015 07:09
Last Modified: 09 Mar 2016 07:35
URI: http://repozitorij.fsb.hr/id/eprint/3918

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