Characterization of single crystalline austenitic stainless steel thin struts processed by laser powder bed fusion. (1st April 2019)

• Record Type: Journal Article
• Authors: Wang, X.; Muñiz-Lerma, J.A.; Sanchez-Mata, O.; Attarian Shandiz, M.; Brodusch, N.; Gauvin, R.; Brochu, M.
• Is Part Of: Scripta materialia. Number 163(2019)
• Page Start: 51
• Page End: 56
• Publication Date: 2019-04-01
• Subjects: Laser powder bed fusion -- Austenitic stainless steel -- Single crystal -- Twinning -- Dynamic recrystallization; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2018.12.032
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Single crystalline austenitic stainless steel struts with a diameter of 250 μm were successfully fabricated using laser powder bed fusion (LPBF). The struts exhibited a strong 〈110〉 texture parallel to the building direction (BD). Excellent strength-ductility combination was achieved for the struts, which is attributed to the strengthening of the fine cellular sub-grains and the twinning-induce plasticity (TWIP) effect. After deformation, dynamic recrystallization (DRX) was observed and its presence is closely related to the unique microstructure of the single crystalline struts. Graphical abstract: Unlabelled Image