Journal of the Korean Society of Fisheries and Ocean Technology (수산해양기술연구)
- Volume 28 Issue 1
- /
- Pages.71-78
- /
- 1992
- /
- 2671-9940(pISSN)
- /
- 2671-9924(eISSN)
A Study on High Temperature Creep and Stress Relaxation Properties of Zr-4
Zr-4의 고온 크리프 및 응력이완 특성에 관한 연구
- Oh, Sea-Kyoo (College of Engineering, National Fish. Univ. of Pusan) ;
- Park, Chung-Bae (Ko-Ri Atomic Power Plant) ;
- Han, Sang-Deok (National Tongyeong Fisheries Junior College)
- Published : 1992.03.01
Abstract
Zr-4 used for a cladding and an end plug of reactor component has creep deformation under operation at high temperature. Creep is regarded as the time dependent deformation of a material under constant applied stress. Although the major source of the deformation of zirconium component in water-cooled reactors is irradiation creep, the thermal creep may give a rise to significant deformation in reactor component especially at relatively high temperatures and at various constant stresses, and therefore it must be predicted accurately. Stress relaxation is the time dependent change of stress at constant strain and it is a process related intimately to creep. In this paper, the creep behavior and stress relaxation of Zr-4 is examined at the temperature of 50
Keywords