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

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 bou...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2021-09, Vol.825, p.141922, Article 141922
Main Authors: da Cruz Gallo, Flávia, Barreto de Azevedo, Luiz Maurício, Figueiredo, Arthur Ribeiro, de Vasconcelos Varela, Amanda, Araújo, Leonardo Sales, de Almeida, Luiz Henrique
Format: Article
Language:English
Subjects:
Alloy 718
Cold rolling
Ductile fracture
Electron backscatter diffraction
Failure mechanisms
Fracture surfaces
Grain boundaries
Grain boundary character distribution
Heat treating
Heat treatment
Microstructure
Nickel base alloys
Oxidation
Oxidation assisted intergranular cracking
Sheets
Solution annealing
Strain rate
Superalloys
Tensile tests
Thermomechanical treatment
Thin sheets
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Summary: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 
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2021.141922