Published February 2012 | Version v1
Journal article Metadata-only

Effect of Nb and Cu on α/β phase transition temperature and corrosion behavior of new type zirconium alloys

Creators

  • 1. School of Manufacture Science and Engineering, Sichuan University (China)
  • 2. Science and Technology on Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China, Chengdu (China)

Description

The microstructure and the performance of corrosion resistance of Zr-Nb-Cu alloys have been investigated in the superheated steam of 500℃/10.3 MPa. The results showed that the alloy Zr-1.0Nb-0.05Cu possessed the best corrosion resistance, which was far superior to that of Zr-4 and N18. The second phase particles which contain Nb, Fe and Cr formed in Zr-Nb-Cu alloys, which was a factor that affected the corrosion resistance of Zr alloys. During heating up of Zr-Nb-Cu alloys in the DSC experiment, the corrosion induced hydride dissolved and hydrogen solutionizing in the matrix. When the temperature reached to α/β phase transition temperature (about 550℃), β phase transformation occurred. The addition of Nb element can decrease the temperature of hydrogen-induced β phase transformation, and the increasing of Cu content can reduce the hydrogen absorbing amount, and improve the corrosion resistance of the alloy significantly. (authors)

Additional details

Publishing Information

Journal Title
Nuclear Power Engineering
Journal Volume
33
Journal Issue
1
Journal Page Range
p. 93-97
ISSN
0258-0926

INIS

Country of Publication
China
Country of Input or Organization
China
INIS RN
45102756
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
CALORIMETRY; COPPER ADDITIONS; CORROSION; CORROSION RESISTANCE; HEATING; HYDRIDES; HYDROGEN; MATRICES; MICROSTRUCTURE; NIOBIUM ALLOYS; NITROGEN 18; PARTICLES; PERFORMANCE; PHASE TRANSFORMATIONS; PRESSURE RANGE MEGA PA 10-100; STEAM; TEMPERATURE RANGE 0400-1000 K; TRANSITION TEMPERATURE; ZIRCONIUM ALLOYS
Descriptors DEC
ALLOYS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CHEMICAL REACTIONS; COPPER ALLOYS; ELEMENTS; HYDROGEN COMPOUNDS; ISOTOPES; LIGHT NUCLEI; MILLISECONDS LIVING RADIOISOTOPES; NITROGEN ISOTOPES; NONMETALS; NUCLEI; ODD-ODD NUCLEI; PHYSICAL PROPERTIES; PRESSURE RANGE; PRESSURE RANGE MEGA PA; RADIOISOTOPES; TEMPERATURE RANGE; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT ALLOYS

Optional Information

Notes
4 figs., 3 tabs., 8 refs.