Microstructure and Mechanical Properties of Tortoise Carapace Structure Bio-Inspired Hybrid Composite
来源期刊：Acta Metallurgica Sinica2018年第9期
论文作者：Bao-Shuai Han Yan-Jin Xu En-Yu Guo Tao Jing Hong-Liang Hou Liang-Shun Luo
文章页码：945 - 952
摘 要：A turtle carapace bio-inspired Ti matrix hybrid composite was successfully fabricated in this work.This composite incorporates two parts: the Ti–Al intermetallic multilayered composite and continuous Si C fibers-reinforced Ti matrix composite.In the Ti–Al intermetallic multilayered composite part,a series of Ti–Al intermetallics compounds,including Ti3Al,Ti Al,Ti Al2 and Ti Al3,were formed between the Ti layers.In the continuous Si C fibers-reinforced Ti matrix composite part,Si C fibers and Ti matrix were found to be bonded well through weak interface reaction.Flexural strength of this material reached 1.21 ± 0.16 GPa,measured by three-point bending test.The deformation features suggest that the hierarchical structure combining ductile Ti layers/matrix with brittle high-strength Ti–Al intermetallics layers/Si C fibers can effectively enhance the mechanical properties of the bio-inspired hybrid composite.
Bao-Shuai Han1,2，Yan-Jin Xu1，En-Yu Guo3，Tao Jing4，Hong-Liang Hou1，Liang-Shun Luo2
1. AVIC Manufacturing Technology Institute,Beijing2. School of Materials Science and Engineering,Harbin Institute of Technology3. School of Materials Science and Engineering,Dalian University of Technology4. School of Materials Science and Engineering,Tsinghua University
摘 要：A turtle carapace bio-inspired Ti matrix hybrid composite was successfully fabricated in this work.This composite incorporates two parts: the Ti–Al intermetallic multilayered composite and continuous Si C fibers-reinforced Ti matrix composite.In the Ti–Al intermetallic multilayered composite part,a series of Ti–Al intermetallics compounds,including Ti3Al,Ti Al,Ti Al2 and Ti Al3,were formed between the Ti layers.In the continuous Si C fibers-reinforced Ti matrix composite part,Si C fibers and Ti matrix were found to be bonded well through weak interface reaction.Flexural strength of this material reached 1.21 ± 0.16 GPa,measured by three-point bending test.The deformation features suggest that the hierarchical structure combining ductile Ti layers/matrix with brittle high-strength Ti–Al intermetallics layers/Si C fibers can effectively enhance the mechanical properties of the bio-inspired hybrid composite.
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