Tensile and flexural properties of multilayered metal/ intermetallics composites
Tensile and flexural properties of multilayered metal/ intermetallics composites
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DOI：
10.1016/j.matchar.2015.02.018
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发表时间：
2015-04
影响因子：
4.7
通讯作者：
Yanbo Sun;J. Chen;Ma Fengmei;K. Ameyama;W. Xiao;Chao-Li Ma
中科院分区：
文献类型：
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作者：
Yanbo Sun;J. Chen;Ma Fengmei;K. Ameyama;W. Xiao;Chao-Li Ma
本文研究了烧结Ti/Ti - al金属间化合物多层复合材料的拉伸和弯曲性能，并与多层Ti3Al/TiAl复合材料和均相Ti - al金属间化合物合金进行了比较。实验结果表明，Ti/Ti - al复合材料具有独特的金属/金属间化合物多层结构，具有优异的拉伸和弯曲强度。多层Ti/Ti - al复合材料在室温下也表现出高水平的耐损伤能力。结果表明，含有残余韧性金属层（Ti层）的多层复合材料在弯曲载荷下的性能比拉伸载荷下的性能强得多。用一个简单的理论模型解释了金属/金属间化合物多层结构对弯曲挠度显著改善的积极作用。
The tensile and flexural properties of sintered Ti/Ti–Al intermetallics multilayered composites were investigated and compared with those of multilayered Ti3Al/TiAl composites and homogeneous Ti–Al intermetallics alloys in this paper. The experimental results indicate that the Ti/Ti–Al composites exhibit superior tensile and flexural strengths because of the unique metal/intermetallics multilayered microstructure. The multilayered Ti/Ti–Al composites also show a high level of damage-tolerant capacity at room temperature. It was found that the multilayered composites with remaining ductile metal layers (Ti layers) behave much stronger under flexural loading compared with tensile loading. The positive effect of metal/intermetallics multilayered structure on the remarkable improvement of bending deflection was interpreted by a simple theoretical model.