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韩宝帅,徐严谨,万雄,荆涛,侯红亮,马晓光,裴葆青.基于仿生结构的Al-Ti-Ti2AlNb层状复合材料的组织与力学性能[J].稀有金属材料与工程(英文),2020,49(6):2083~2088.[Han Baoshuai,Xu Yan-jin,Wan Xiong,Jing Tao,Hou Hongliang,Ma Xiaoguang and Pei Baoqing.Microstructure and Mechanical Properties of Al-Ti-Ti2AlNb Laminated Composites Based on Biomimetic Structure[J].Rare Metal Materials and Engineering,2020,49(6):2083~2088.]
Microstructure and Mechanical Properties of Al-Ti-Ti2AlNb Laminated Composites Based on Biomimetic Structure
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Received:April 30, 2019  Revised:August 17, 2019
DOI:
Key words: laminated structure  interface structure  in-situ bending  compressive strength  strengthening mechanism
Foundation item:国防基础科研计划资助(项目号JCKY2017205B032),国防科技创新特区项目.
Author NameAffiliation
Han Baoshuai,Xu Yan-jin,Wan Xiong,Jing Tao,Hou Hongliang,Ma Xiaoguang and Pei Baoqing  
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Abstract:
      Based on the ductile-brittle composite principle of biomaterials , Al foils, Ti foils and Ti2AlNb foils were stacked in a certain order in this work, and Al-Ti-Ti2AlNb laminated composites were prepared by vacuum hot pressing sintering. The microstructure was analyzed by means of SEM and XRD, and the flexural and compressive properties were also analyzed. It is found that the laminated composites were composed of Ti, a series of TiAl compounds and Ti2AlNb combined with obvious hierarchical structure and clear interface. The flexural strength and compressive strength are 1231±71 MPa and 1341±63 MPa, respectively, which have significant advantages over similar materials. The analysis shows that the existence of laminated structures plays an important role in optimizing the mechanical properties. Compared with the conventional binary TiAl layered materials, the existence of Ti2AlNb layers significantly improves the mechanical properties.