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向Ti3Si C2材料中引入Al、Al-Si合金粉,研究Al组元对Ti_3Si C_2材料致密度、力学性能、相组成及显微结构的影响。结果表明:引入适量的Al、Al-Si合金粉,能够促进Ti3Si C2材料的生成,可以得到纯度更高的Ti3Si C2材料,且引入Al-Si的效果较为明显;会生成Ti_3Si(1-x)AlxC_2,随着Al、Al-Si合金粉含量的增加,生成较多的Ti_3Si(1-x)AlxC_2,从而降低Ti3Si(Al)C_2材料的体积密度能生成固溶相,起到固溶强化的作用,可得到性能良好Ti3Si C材料,有助于提高Ti_3Si C材料的力学性能,当引入量为0.3Al-Si合金粉时,抗弯强度为352 MPa,断裂韧性为5.68 MPa·m1/2。
Al and Al-Si alloy powders were introduced into Ti3Si C2 to study the effect of Al composition on the density, mechanical properties, phase composition and microstructure of Ti3Si C2. The results show that the introduction of a suitable amount of Al and Al-Si alloy powder can promote the formation of Ti3SiC2 material, and the higher purity of Ti3SiC2 material can be obtained. The effect of introducing Al-Si is obvious. Ti3Si (1-x) AlxC_2, Ti 3 Si (1-x) AlxC 2 was formed with the increase of the content of Al and Al-Si alloy powders, so the bulk density of Ti 3 Si (Al) Ti3SiC material can improve the mechanical properties of Ti3SiC material. When the introduction amount of 0.3Al-Si alloy powder, the flexural strength of 352 MPa, the fracture toughness of 5.68 MPa · m1 / 2.