title: Self-patterning Gd nano-fibers in Mg-Gd alloys.
abstract: Manipulating the shape and distribution of strengthening units, e.g. particles, fibers, and precipitates, in a bulk metal, has been a widely applied strategy of tailoring their mechanical properties. Here, we report self-assembled patterns of Gd nano-fibers in Mg-Gd alloys for the purpose of improving their strength and deformability. 1-nm Gd nano-fibers, with a 〈c〉-rod shape, are formed and hexagonally patterned in association with Gd segregations along dislocations that nucleated during hot extrusion. Such Gd-fiber patterns are able to regulate the relative activities of slips and twinning, as a result, overcome the inherent limitations in strength and ductility of Mg alloys. This nano-fiber patterning approach could be an effective method to engineer hexagonal metals.
authors.affiliation: State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai, 200240, P.R. China.|National Engineering Research Center of Light Alloy Net Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai, 200240, P.R. China.
authors.forename: Yangxin
authors.initials: Y
authors.lastname: Li
authors.affiliation: Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA.
authors.forename: Jian
authors.initials: J
authors.lastname: Wang
authors.affiliation: National Key Lab of Shockwave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, Sichuan, 621000, P.R. China.
authors.forename: Kaiguo
authors.initials: K
authors.lastname: Chen
authors.affiliation: National Engineering Research Center of Light Alloy Net Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai, 200240, P.R. China.
authors.forename: Meiyue
authors.initials: M
authors.lastname: Shao
authors.affiliation: State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai, 200240, P.R. China.
authors.forename: Yao
authors.initials: Y
authors.lastname: Shen
authors.affiliation: National Engineering Research Center of Light Alloy Net Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai, 200240, P.R. China.
authors.forename: Li
authors.initials: L
authors.lastname: Jin
authors.affiliation: State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai, 200240, P.R. China.
authors.forename: Guo-Zhen
authors.initials: GZ
authors.lastname: Zhu