Published August 2000
| Version v1
Journal article
Sensitivity studies on thermal margin of reactor vessel lower head during a core melt accident
- 1. Korea Atomic Energy Research Institute, Taejon (Korea, Republic of)
Description
The effect of alloying elements on the creep resistance of Zr alloys was investigated using thermal creep tests that were performed as a part of advanced fuel cladding development. The creep tests were conducted at 400 degs. C and 150 MPa for 240 hrs.. A statistical model was derived from the relationship between the steady-state creep rate and the content of individual alloying elements. The creep shortening effect decreased in the following sequence : Nb, Sn, Mn, Cr, Mo, Fe and Cu. The high creep resistance of Sn and the opposite effect of Fe on Zirconium alloys seem to be associated with their lowering and enhancing, respectively, the self-diffusivity of the zirconium matrix. (author)
Additional details
Publishing Information
- Journal Title
- Journal of the Korean Nuclear Society
- Journal Volume
- 32
- Journal Issue
- 4
- Series
- 14 refs, 1 tab., 6 figs
- Journal Page Range
- p. 372-378
- ISSN
- 0372-7327
INIS
- Country of Publication
- Korea, Republic of
- Country of Input or Organization
- Korea, Republic of
- INIS RN
- 31058080
- Subject category
- S36: MATERIALS SCIENCE; S22: GENERAL STUDIES OF NUCLEAR REACTORS;
- Descriptors DEI
- COPPER; CREEP; NIOBIUM; NUCLEAR FUELS; SELF-DIFFUSION; STEADY-STATE CONDITIONS; ZIRCALOY 4; ZIRCONIUM ALLOYS
- Descriptors DEC
- ALLOY-ZR98SN-4; ALLOYS; CHROMIUM ADDITIONS; CHROMIUM ALLOYS; CORROSION RESISTANT ALLOYS; DIFFUSION; ELEMENTS; ENERGY SOURCES; FUELS; HEAT RESISTANT MATERIALS; HEAT RESISTING ALLOYS; IRON ADDITIONS; IRON ALLOYS; MATERIALS; MECHANICAL PROPERTIES; METALS; REACTOR MATERIALS; REFRACTORY METALS; TIN ALLOYS; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENTS; ZIRCALOY; ZIRCONIUM ALLOYS; ZIRCONIUM BASE ALLOYS