17 KB840 KB16 KB199219991997Kneissl, A. C.Scherngell, Heinrichletnik:315 straništevilka:6str. 539-543ISSN:1318-0010COBISSID:71594URN:URN:NBN:SI:doc-WB7G91Y3enInštitut za kovinske materiale in tehnologijeŽelezarna JeseniceŽelezarna RavneŽelezarna ŠtoreKovine zlitine tehnologijenatezni preizkusnikeljstabilnosttitanutrujenost materialovvpliv temperaturezlitineTwo-way shape memory effect and its degradation during thermal cycles in Ni-Ti alloys| Dvosmerni spominski efekt v Ni-Ti zlitinah in njegova degradacija med toplotnimi cikli|This work presents a study of the degradation of the Two-Way Shape Memory Effect (TWSME) due to working cycles. An intrinsic TWSME was induced in wire specimens of a near equiatomic Ni-Ti alloy by thermomechanical training. The development of the two way strain was analysed and discussed with respect to the different training parameters and the preliminary heat treatment of the samples. Subsequent to the training, the stability of the obtained TWSME was examined by thermal cycling under stress-free conditions. Possible reasons and mechanisms for the degradation of the effect during thermal cycling are discussedV delu se predstavlja raziskava degradacaije dvosmernega spominskega efekta (TWSME) zaradi delovnih ciklov. Intrinsičen TWSME je bil induciran v žice iz equiatomske Ni-Ti zlitine s termomehanično obdelavo. Razvoj dvosmerne deformacije je bil raziskan in ocenjen glede na obremenilne in predhodno toplotno obdelavo vzorcev. Po obremenitvah je bila stabilnost dosežene TWSME preiskana s toplotnim cikliranjem brez napetosti. Razpravlja se o možnih vzrokih in mehanizmih degradacije efekta med termičnim cikliranjemTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of Slovenia