Effects of different carbon sources on the compressive properties of in situ high-volume-fraction TiCx/2009Al composites
Effects of different carbon sources on the compressive properties of in situ high-volume-fraction TiCx/2009Al composites
复制标题
不同碳源对原位高体积分数TiCx/2009Al复合材料压缩性能的影响
DOI：
10.1080/00325899.2016.1251061
复制
发表时间：
2016-01-01
影响因子：
1.4
通讯作者：
Jiang, Q. -C.
中科院分区：
文献类型：
--
作者：
Wang, L.;Qiu, F.;Jiang, Q. -C.
碳源，即碳纳米管（CNT）、石墨、炭黑（C-black）对原位合成的TiCx尺寸、形状和压缩性能的影响，研究了TiCx/2009 Al复合材料。当使用CNT和C-black时，合成的粒径分别为0.08-1和0.9-5 μ m的TiCx为球形或近球形，而使用石墨时，合成的粒径为0.2-2 μ m的TiCx为八面体或球形。随着TiCx含量的增加，TiCx/2009 Al复合材料的屈服强度（σ（0.2））、抗压强度（σ（UCS））和硬度均增加，塑性应变（σ）减小。60 vol.-%的σ（0.2）、σ（UCS）、σ和硬度利用碳纳米管制备的TiCx/2009 Al复合材料的抗压强度分别为722 MPa、946 MPa、3.2%和260 ± 10 Hv。复合材料的强度增加是由于尺寸更小的球形TiCx颗粒。
Effects of carbon sources, i.e. carbon nanotubes (CNTs), graphite, carbon black (C-black), on synthesised TiCx size, shape and compressive properties of in situ 40-60vol.-% TiCx/2009Al composites were investigated. When CNTs and C-black were used, the synthesised TiCx with particle sizes of 0.08-1 and 0.9-5 mu m, respectively, was spherical or nearly spherical in shape, while graphite was used, the synthesised TiCx with particles sizes of 0.2-2 mu m was octahedral or spherical in shape. The yield strength (sigma(0.2)), ultimate compression strength (sigma(UCS)) and hardness of TiCx/2009Al composites all increased with increasing TiCx content, while the plastic strain (epsilon) decreased. The sigma(0.2), sigma(UCS), epsilon and hardness of 60vol.-% TiCx/2009Al composites fabricated by using CNTs were 722MPa, 946MPa, 3.2% and 260 +/- 10Hv, respectively. The strength increase of the composites resulted from finer-sized TiCx particles with spherical shape.