Shot peening is conducted on the outside surface of an 800 alloy heat-exchanging tube in a nuclear steam generator using a shot-peening machine. The effects on the 800 alloy tube surface micrograph, residual stress and stress corrosion cracking (SCC) in the 10%NaOH solution at high temperature and high pressure have been studied. The result shows that the shot peening can change the surface micrograph and residual stress of the 800 alloy tube. As the cover rate of shot peening is creases, the residual stress of the 800 alloy tube gradually decreases, and SCC resistance is significantly improved.
CAI Zhi-gang1, WANG Yong-dong2, SU Cheng1, CAO Ping1
. Effects of different cover rate of shop peening on residual stress and stress corrosion cracking of 800 alloy tube[J]. Journal of Shanghai University, 2015
, 21(2)
: 170
-176
.
DOI: 10.3969/j.issn.1007-2861.2014.04.020
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