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利用反应热压技术制备了3D网状结构Ti Bw/Ti60复合材料,对复合材料在600~750℃范围内的高温力学性能进行了测试。结果表明,与Ti60合金相比,3D网状结构Ti Bw的原位形成显著提高了复合材料高温强度。在600、650、700和750℃,5.1%(体积分数)Ti Bw/Ti60复合材料的抗拉强度相比Ti60合金分别提高了42.5%、39.9%、35%和13.2%,而延伸率在各温度下均低于基体合金。网状结构复合材料断裂时形成的主裂纹沿网状界面处扩展,且断裂机制随实验温度增加而改变。
Ti Bw / Ti60 composites with 3D network structure were prepared by reactive hot pressing technique. The mechanical properties of composites at 600-750 ℃ were tested. The results show that the in-situ formation of Ti Bw 3D mesh structure significantly improves the high temperature strength of the composites compared with that of Ti60 alloy. At 600, 650, 700 and 750 ℃, the tensile strength of 5.1% TiBw / Ti60 composites increased by 42.5%, 39.9%, 35% and 13.2% Temperature is lower than the base alloy. The main crack formed during the fracture of the net-like composite expands along the mesh interface and the fracture mechanism changes as the experimental temperature increases.