A new method to texture dense Mn+1AXn ceramics by spark plasma deformation. (15th January 2016)

• Record Type: Journal Article
• Authors: Lapauw, T.; Vanmeensel, K.; Lambrinou, K.; Vleugels, J.
• Is Part Of: Scripta materialia. Volume 111(2016)
• Page Start: 98
• Page End: 101
• Publication Date: 2016-01-15
• Subjects: MAX phase -- Deformation behaviour -- Spark plasma sintering -- Textured ceramics; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2015.08.023
• Languages: English
• ISSNs: 1359-6462

Abstract

Graphical abstract: Abstract: This work explored a new method to texture M n +1 AX n phases by deforming discs of dense ceramics Maxthal 211® (nominally Ti2 AlC) and Maxthal 312® (nominally Ti3 SiC2 ) in a spark plasma facility. The disc diameter increased by 40% without crack formation. After deformation, the MAX grains exhibited clear preferential crystallographic orientation, whereby the c -axis was aligned to the compression direction. The fracture toughness increased both parallel and perpendicular to the textured top surface compared with the as-sintered materials. The onset of plastic deformation was observed near the brittle-to-plastic transformation temperature, a fact that could be associated with the change in elastic response.