Author(s)

K.F. Amouzouvi, L.J. Clegg, R.C. Styles &J.E. Winegar

Abstract

Effect of shot peening and post-peening heat treatments on the microstructure, the residual stresses and hardness, corrosion and deuterium uptake resistance of Zr-2.5Nb pressure tube material K.F. Amouzouvi,* L.J. Clegg," R.C. Styles,* J.E. Winegar* "AECL Research, Whiteshell Laboratories, Fuel Channel Components Branch, Pinawa, Manitoba, ROE 1LO Canada AECL Research, Chalk River Laboratories, Reactor Materials Research Branch, Chalk River, Ontario, ROE 1LO Canada ABSTRACT The effect of shot peening and post-peening heat treatment on the microstructure, the residual stresses, hardness, corrosion and deuterium uptake behaviour of Zr-2.5Nb pressure tube material has been evaluated. Shot peening produced a heavily cold-worked microstructure, with the original grain structure completely obliterated by the shot-peening process. Shot peening also caused a change in the texture of this material. Heat treating shot- peened specimens at temperatures from 67

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