Temperature and hydrogen concentration influence on Zi -2.5Nb alloy mechanical and fracture toughness characteristics

• Autorzy: Daunys M. , Dundulis R. , Krasauskas P.
• Języki publikacji: EN

Abstrakty

EN

This paper deals with an investigation of temperature and hydrogen concentration influence on Ignalina NPP RBMK-1500 unit 2 reactor fuel channel tube material - Zr-2.5Nb zirconium alloy (TMT-2) mechanical and fracture toughness characteristics. Two types of specimens were used in this study - tensile and compact semi-natural specimens. Testing temperatures were selected from 20 to 300°C that correspond various operating regimes of the reactor. Made-up hydrogen saturated specimens were tested at hydrogen concentration levels from 52 up to 140 ppm m order to examine hydrogen influence on mechanical and fracture toughness characteristics of the alloy. Dependence of fracture toughness to various mechanical characteristics of the alloy was analysed. Investigation has shown correlation of stress intensity factor Kc to modified plasticity criterion of the alloy.

Słowa kluczowe

EN

fracture; temperature; hydrogen

• Wydawca: Oficyna Wydawnicza Politechniki Białostockiej
• Czasopismo: Acta Mechanica et Automatica
• Rocznik: 2007
• Tom: Vol. 1, no. 1
• Strony: 19--22
• Opis fizyczny: Bibliogr. 7 poz., rys., tab., wykr.

Twórcy

autor

Daunys M.

autor

Dundulis R.

autor

Krasauskas P.

• Machine Design Department, Kaunas University of Technology, Kęstučio 27, 44312 Kaunas, Lithuania,

Bibliografia

• 1. Lanin G., Zalivin I. M., Turchin V. N., Boiko E. B. (1984). Mechanical properties of zirconium, titanium, and yttrium hydride alloys. Strength of Materials, Vol. 16, 869-876.
• 2. Yamanaka Shinsuke, Setoyama Daigo, Muta Hiroaki, Uno Masayoshi, Kuroda Masatoshi, Takeda Kiyoko, Matsuda Tetsushi (2004). Characteristics of zirconium hydrogen solid solution. Journal of Alloys and Compounds, Vol. 372, 129-135.
• 3. European standard EN 10002-1. (2001). Metallic materials-Tensile testing-Part 1: Method of test at ambient temperature.
• 4. European standard EN ISO 12737. (1999). Metallic materials. Determination of plane-strain fracture toughness.
• 5. ASTM E 399-90. (1990). Standard test method for plane-strain fracture toughness of metallic materials.
• 6. Daunys M., Dundulis R., Krasauskas P. (2006). Investigation of RBMK-1500 reactor fuel channel material aging process. Proceedings of 11th International Conference, Kaunas, 74-78.
• 7. GOST 25.506-85. (1985). Mechanical test methods of metals. Determination of fracture toughness characteristics under static loading (in Russian).