Abstract
Effect of Solution Annealing on Alpha Prime Martensitic Microstructure of Cold Rolled AISI316L Stainless Steel
Highlights
Intergranular attack in austenitic stainless steels has been of great interests and investigated for about one century [1]
Based on the good compatibility to high temperature water environment, AISI316L austenitic stainless steel is widely used for internal structural materials of light water reactors
Even though stainless steels are known having a good resistance to general corrosion because they form a thin chromium rich passive surface film, they are susceptible to localized corrosion attack such as pitting, intergranular corrosion, and stress corrosion cracking [12,13,14,15,16,17]
Summary
Intergranular attack in austenitic stainless steels has been of great interests and investigated for about one century [1]. In early 1970s, intergranular cracking (IGC) was observed in the 25%Cr-20%Ni austenitic stainless steel of the parts of fuel assembly for steam generating heavy water reactor [9] and the Cr depletion and Ni, Si enrichment were detected near the grain boundaries of this material. The increase of α(110) martensitic structure by martensitic transformation induced by plastic deformation causes a change in physical properties of austenitic stainless steels. Even though stainless steels are known having a good resistance to general corrosion because they form a thin chromium rich passive surface film, they are susceptible to localized corrosion attack such as pitting, intergranular corrosion, and stress corrosion cracking [12,13,14,15,16,17]. The advantages of using solution annealing indicate the new contributions about SCC resistance since there are many papers related to the martensitic transformation is expected to change by stress states
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