INVESTIGATION OF MICROSTRUCTURE AND LOCAL MECHANICAL PROPERTIES OF ZIRCONIUM ALLOYS

被引:0
作者
Blahova, Olga [1 ]
Medlin, Rostislav [1 ]
Riha, Jan [1 ]
机构
[1] Univ W Bohemia, Vyzkumne Ctr Nove Technol, Plzen 30614, Czech Republic
来源
METAL 2009, CONFERENCE PROCEEDINGS | 2009年
关键词
zirconium alloys; oxygen; nitrogen; EPMA;
D O I
暂无
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
Zirconium alloys are very important materials used in nuclear reactors. Due to their high corrosion resistance and low thermal neutron capture cross section are these alloys ideal for production of cladding of the nuclear fuel rods. In order to define their resistance to damage, it is necessary to know their mechanical properties after long-term service and high temperature oxidation, as well as the reasons for changes in those characteristics. This paper presents the evaluation of microstructure, local mechanical properties, results of X-ray diffraction and electron microprobe measurements of the Zr-alloy after various exploation times prior to cooling, which simulated the LOCA conditions (loss of coolant accident). The microstructure was studied by optical and scanning electron microscopy. The indentation hardness was evaluated by nanoindentation method. The parameters and the volume of the lattice of phases were analysed by X-ray diffraction method. The chemical composition, primarily the oxygen content, was analysed by electron microprobe. The results proved the existence of relationships between the time of high temperature exposure, the content of oxygen and its effect on microstructure and local mechanical properties of Zr-alloys.
引用
收藏
页码:359 / 365
页数:7
相关论文
共 7 条
[1]  
BLAHOVA O, CHEM LISTY IN PRESS
[2]  
CHUNG HEE M., 2005, Nuclear Engineering and Technology, V37, P327
[3]   Some thoughts on the mechanisms of in-reactor corrosion of zirconium alloys [J].
Cox, B .
JOURNAL OF NUCLEAR MATERIALS, 2005, 336 (2-3) :331-368
[4]  
*CSN EN ISO, 145771 CSN EN ISO
[5]  
MEDLIN R, CHEM LISTY IN PRESS
[6]  
Riha J., 2008, P 14 INT C APPL PHYS, P195
[7]  
VRTILKOVA V, 2006, VLIV ROZPOUSTENI OXI, P1165