Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5455164 | Materials Science and Engineering: A | 2017 | 21 Pages |
Abstract
Hydrogen Induced Stress Cracking (HISC) resistance of super duplex stainless steels is basically controlled by the material's microstructure. Friction stir welding is a low heat input joining process that has the potential to maintain the base metal original resistance to HISC since it does not significantly alter the proportion of ferrite and austenite. This work evaluated the susceptibility to HISC under cathodic protection of friction stir welded super duplex stainless steel UNS S32760. Microstructure evaluation revealed a recommended proportion of ferrite and austenite phases as well a refinement of the overall stir zone microstructure. Fracture toughness tests in synthetic sea water under cathodic protection of â 895Â mVsce indicated that the microstructure of the stir zone is actually less sensitive to HISC than the microstructure of the base metal.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Cristian Pohl Meinhardt, Adriano Scheid, Jorge Fernandez dos Santos, Luciano Andrei Bergmann, Marcelo Borges Favaro, Carlos Eduardo Fortis Kwietniewski,