Microstructural Study of Metal Arc Welded Austenitic Stainless Steel for Automotive and Nuclear Applications
Main Article Content
Abstract
In the present investigation, tensile, impact, microhardness properties and metallurgical behaviour of Manual Metal Arc Welded (MMAW) 316LN Stainless Steel (SS) were analysed and discussed. From this investigation, it was observed that the optical micrograph of the weld metal region solidified in a fully austenitic mode along with small volume fractions of δ-ferrite. The existence of δ-ferrite enhances the strength but reduces ductility and toughness. The microhardness of the weld metal region is higher than others. The tensile properties are superior to 316LN SS and the failure of the transverse tensile specimens was found at the base metal region. The fracture surfaces of both impact toughness and tensile specimens have shallow dimples and flat facets.
Article Details
Issue
Section
Articles
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors who publish with this journal agree to the following terms: a. Authors retain copyright and grant the journal right of first publication, with the work two years after publication simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal. b. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal. c. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).