Enhancing ductility of titanium matrix composites by multimodal α-grains. (September 2019)

• Record Type: Journal Article
• Authors: Wang, Shuai; Huang, LuJun; Zhang, Rui; Liu, BaoXi; Cui, XiPing; Geng, Lin; Peng, Hua-Xin
• Is Part Of: Scripta materialia. Number 170(2019)
• Page Start: 161
• Page End: 165
• Publication Date: 2019-09
• Subjects: Metal matrix composites -- Ductility -- Multimodal grains -- Layered structures -- Dynamic recrystallization; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2019.06.009
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: In order to improve the ductility of titanium matrix composites, laminated TiB/Ti-TiB/Ti-6Al-2Zr-1Mo-1 V composites was fabricated. Multimodal α-grains including columnar grains, recrystallized fine grains and near-equiaxed grains were formed during hot rolling process. Compared with the hot rolled monolithic TiB/Ti-6Al-2Zr-1Mo-1V composites, the uniform elongation of the multimodal grain structured composites was slightly improved (about 2% increase), and the non-uniform elongation was increased by 10% which is rather significant. While the slight uniform-elongation enhancement can be mainly attributed to columnar grains strain hardening and fine grains strengthening, it is the near-equiaxed grains that contributed most to the non-uniform elongation. Graphical abstract: Unlabelled Image