title: A novel Al matrix composite reinforced by nano-AlNpnetwork.
abstract: In pursuit of lightweighting of automobiles and low emission of transportation, the efforts to develop high-strength, heat-resistant and fatigue-resistant Al alloys and/or composites have been ongoing. Here we report a novel Al matrix composite with ultrahigh strength reinforced by a three dimensional network of nano-AlN particles for the first time. The in-situ synthesized AlN particles are connected by twinning bonding chains and built up a three dimensional network strengthening Al matrix enormously like the skeleton to human body. The composite containing 16.4wt.% AlN particles shows excellent properties: the ultimate tensile strengths can be up to 518MPa at room temperature and 190MPa at 350 °C. This peculiar performance results from the novel spatial distribution of nano-scale AlN particles. Our findings in this work would help to develop a potential candidate for high-performance heat resistance light-metal based materials.
authors.affiliation: Key Laboratory for Liquid-Solid Structural Evolution &Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China.
authors.forename: X
authors.initials: X
authors.lastname: Ma
authors.affiliation: Key Laboratory for Liquid-Solid Structural Evolution &Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China.
authors.forename: Y F
authors.initials: YF
authors.lastname: Zhao
authors.affiliation: Key Laboratory for Liquid-Solid Structural Evolution &Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China.
authors.forename: W J
authors.initials: WJ
authors.lastname: Tian
authors.affiliation: Key Laboratory for Liquid-Solid Structural Evolution &Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China.
authors.forename: Z
authors.initials: Z
authors.lastname: Qian
authors.affiliation: College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China.
authors.forename: H W
authors.initials: HW
authors.lastname: Chen
authors.affiliation: Key Laboratory for Liquid-Solid Structural Evolution &Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China.
authors.forename: Y Y
authors.initials: YY
authors.lastname: Wu
authors.affiliation: Key Laboratory for Liquid-Solid Structural Evolution &Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China.
authors.forename: X F
authors.initials: XF
authors.lastname: Liu