Effects of cooling rate and Nb-content on microstructure and corrosion behavior of Zr-xNb alloys
- 1. Chungnam National University, Taejon (Korea, Republic of)
- 2. Korea Atomic Energy Research Institute, Taejon (Korea, Republic of)
Description
To investigate the effect of cooling rate and Nv-content on the microstructure and corrosion characteristics of Zr-Nb alloys, four kinds of Zr-xNb(x=0.5, 1.0, 2.0, 3.0 wt.%) alloys were designed and manufactured. The corrosion test and microstructural study were performed for the specimens which were heat-treated at 1020 deg C for 30 minutes and then cooled by water quenching, oil quenching and air cooling. When the cooling rate was the same, the addition of Nb enhanced the change of microstructure from Widmanstaetten to Martensite and decreased the corrosion resistance. In the equal Nb-content, the lath width and corrosion resistance increased with decreasing the cooling rate. It is considered that corrosion resistance would be related with the distribution of supersaturated Nb in Zr matrix. (author)
Additional details
Publishing Information
- Journal Title
- Journal of the Korean Institute of Metals and Materials
- Journal Volume
- 38
- Journal Issue
- 9
- Series
- 30 refs., 2 tabs., 10 figs.
- Journal Page Range
- p. 1167-1174
- ISSN
- 0253-3847
INIS
- Country of Publication
- Korea, Republic of
- Country of Input or Organization
- Korea, Republic of
- INIS RN
- 32033470
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- CORROSION RESISTANCE; MARTENSITE; MICROSTRUCTURE; NIOBIUM ADDITIONS; QUENCHING; ZIRCONIUM ALLOYS
- Descriptors DEC
- ALLOYS; CARBON ADDITIONS; IRON ALLOYS; NIOBIUM ALLOYS; TRANSITION ELEMENT ALLOYS