Abstract

The effect of varying solution treatment temperature, rolling temperature, ageing time andtemperature and oxygen content on the corrosion resistance in steam, and the mechanical properties of Zr-2·5%Nb have been investigatedAs the ageing time was increased, the corrosion resistance in both steam and CO 2 improved continoously, but the percentage of hydrogen picked up during corrosion did not change significantly. The strength at 300°C was raised by cold rolling but then decreased with increasing ageing time. Material with high oxygen content possessed better corrosion resistance than that with low. Air cooling after solution treatment did not give such a good combination of strength and corrosion resistance as water quenching.

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