Abstract
In the previous reports we studied the mechanism of various stress relieving methods to the welded joints of stainless clad steel. Now in this report we investigated experimentally the effects of these methods on the sensitivity of stress corrosion, general and intercrystal corrosion of the stainless part of clad steel. As the result of experiments we have reached the following conclusions ; 1. so called "annealing" is not only ineffective in prevension of the stress corrosion cracking, but also harmful to the intercrystal corrosion due to the segregation of Cr-carbide. 2. all the stress relieving methods such as peening, overstrainning and shot peening, except annealing are very effective in the prevention of corrosion cracking, at the same time these methods are not harmful for the resistance of intercrystal corrosion. Finally we should like to say that the shot peening method is the most convenient and effective method of all because its operation is very easy.
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