Effect of Nb and Cu on α/β Phase Transition Temperature and Corrosion Behavior of New Type Zirconium Alloys

LUO Wei; WANG Jun; XIONG Ji; YING Shihao; YANG Xiaoxue; ZHANG Taiping

Mar. 2025

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Article Navigation > Nuclear Power Engineering > 2012 > 33(1): 93-97

LUO Wei, WANG Jun, XIONG Ji, YING Shihao, YANG Xiaoxue, ZHANG Taiping. Effect of Nb and Cu on α/β Phase Transition Temperature and Corrosion Behavior of New Type Zirconium Alloys[J]. Nuclear Power Engineering, 2012, 33(1): 93-97.

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Effect of Nb and Cu on α/β Phase Transition Temperature and Corrosion Behavior of New Type Zirconium Alloys

1. School of Manufacture Science and Engineering, Sichuan University, Chengdu, 610065, China;
2. Science and Technology on Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China, Chengdu, 610041, China

Received Date: 2010-09-26
Rev Recd Date: 2011-05-10

Available Online: 2025-03-08

Abstract

Abstract

The microstructure and the performance of corrosion resistance of Zr-Nb-Cu alloys have been investigated in the superheated steam of 500℃/10.3MPa.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 par-ticles 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 tran-sition 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.
- Zr-Nb-Cu Alloy,
- Corrosion resistance,
- DSC curve,
- α/β Phase transformation temperature