Effect of increased length fraction of Ʃ3n special boundaries on OAIC response of cold rolled Ni-based alloy 718 thin sheets

• DOI: 10.1016/j.msea.2021.141922
• Publication Date: 2021-08-18T10:29:40Z
• Authors: Flávia da Cruz Gallo; Luiz Maurício Bar...; Arthur Ribeiro Fi...; Amanda de Vasconc...; Leonardo Sales Ar...; Luiz Henrique de ...
• Keywords: Fractography; Thermomechanical processing

Abstract Among the well-established Ni-based superalloys, alloy 718 is one of the most widely used in the industry. However, its application is limited up to 650°C due to the occurrence of the oxidation assisted intergranular cracking (OAIC) phenomenon. As a general rule, an increased fraction of special boundaries (3