| Title |
Numerical and experimental research of the influence of hydrogen on the fracture toughness of zirconium – 2.5% niobium alloy / |
| Another Title |
Skaitinis ir eksperimentinis vandenilio įtakos zr-2,5%nb lydinio irimo tąsumo charakteristikoms tyrimas. |
| Authors |
Janulionis, R ; Daunys, M ; Dundulis, G ; Grybėnas, A ; Karalevičius, R |
| Full Text |
|
| Is Part of |
Mechanika.. Kaunas : Technologija. 2008, Nr. 6, p. 5-10.. ISSN 1392-1207. eISSN 2029-6983 |
| Keywords [eng] |
delayed hydride cracking ; zirconium alloys ; zr-2.5nb alloys ; embrittlement ; stress |
| Abstract [eng] |
The aim of work was the experimental investiga-tion and numerical modelling using finite element method of influence of hydrogen to the fracture toughness of Zr-2.5 Nb alloy of a pipe of the fuel channel with ТМT-2 re-actor RBMK-1500. Calculation of characteristics of frac-ture toughness was made with use of experimentally de-termined mechanical properties of zirconium alloy contain-ing hydrogen up to 137 ppm. Comparison of the received results of calculation with experimental data has shown, that the calculated intensity factors KQ and KC*, and also their dependences on concentration of hydrogen are be-tween experimental points. Including the spread of ex-perimental results, their deviation from calculated data does not exceed 6%. It was determined, that the increase in of hydrogen concentration up to 137 ppm at 20°С de-creases the value of intensity factor KQ by 13% and KC* by 24%. |
| Published |
Kaunas : Technologija |
| Type |
Journal article |
| Language |
English |
| Publication date |
2008 |
| CC license |
|
