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Title: Shot Peening To Prevent Stress Corr.cracking And Corr.fatigue Failures Of Austenitic Stainless Steel
Author: Risch, K.
Source: Conf Proc: ICSP-3, (p.141-148)
Publication year 1987
Document number: 1987087
Number of pages: 8
Abstract:
In corrosive environments austenitic CrNi and CrNiMo stainless steels are normally used in their passive state where an extremely thin layer of surface oxide protects the
material against active dissolution. Yet, under the combined action of tensile stresses and several media cracking as a form of localized corrosion may occur. Depending on
whether the loading is applied in a monotonous, in practice mostly static, or in a cyclic way, the phenomena are referred to as stress corrosion cracking (SCC) or corrosion
fatigue (CF), respectively. Under certain conditions, shot peening provides a useful and efficient means to prevent these types of damage by introducing internal
compressive stresses into a zone immediately below the surface. The present paper demonstrates advantages and limitations of shot peening by some selected examples.
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