Influence of Technology of Preparation and Hot Forming on Structural Characteristics of Shape Memory Ni-Ti Alloys

• Autorzy: Szurman, I. , Kursa, M.
• Konferencja: International Conference on Modelling in Mechatronics (9 ; 02-04.09.2004 ; Kazimierz Dolny, Poland)
• Języki publikacji: EN

Abstrakty

EN

System Ni-Ti is based on equi-atomic compound of nickel and titanium. Ni-Ti based alloys are highly stable and resistant to corrosion. However, production of these alloys is very difficult due to high reactivity of titanium. For this reason all the melting processes (plasma, induction, arc melting) must be made in vacuum or under inert atmospheres. Mechanical and other properties of these alloys are in the first place influenced by contents of admixture elements, such as O₂, N₂, H₂, C, etc. Contents of gases in the final material depends in great extent on the used technology of melting. This paper deals with preparation of Ni-Ti based alloys with use of palsma melting, vacuum induction melting and characteristic of properties of Ni-Ti Shape Memory Materials and possibilities of their modification.

Słowa kluczowe

EN

shape memory alloys; plasma melting; induction melting; thermoelastic martensite; recoverable deformation

• Czasopismo: Machine Dynamics Problems
• Rocznik: 2004
• Tom: Vol. 28, No. 4
• Strony: 139-145
• Opis fizyczny: Bibliogr. 7 poz.

Twórcy

autor

Szurman, I.

• VSB - Technical University of Ostrava, Department of Non-Ferrous Metals, Refining and Recycling,

autor

Kursa, M.

• VSB - Technical University of Ostrava, Department of Non-Ferrous Metals, Refining and Recycling,

Bibliografia

• Filip, P., Fyzikálnĕ metalurgické parametry tvarovĕ pamĕt’ovych jevů ve slitinách typu Ti-Ni a možnosti jejich využití, Kand. dis. práce, VŠB Ostrava.
• Kursa, M., Pacholek, P., 2002, Metalurgické charakteristiky tvarovĕ pamĕt’ovych materiálů na bázi Ni-Ti-Me, Metal 2002, Hradec nad Moravicí, Czech Republic.
• Meng, XL., et al., 2001, Microstructure of Stress-Induced Martensite in a Ti-Ni-Hf High Temperature Shape Memory Alloy, Scripta Materialia, 45, No 10, 1177-1182.
• Stöckel, D., 1988, Legierumgera mit Formgedachtnis, München.
• Szurman, I., 2003, Metalurgie pamĕt’ovych materiálů Ni-Ti-Me, Diplomová práce, VŠB Ostrava.
• Wang, L.M., et al., 2002, Melting and Fabrication of NiTi Shape-Memory Alloy Wires, Materials Science Forum, 394-395, 297-300.
• Wu, M.H., 2002, Fabrication of Nitinol Materials and Components, Materials Science Forum, 394-395, 285-292.