SiC纤维增强钛基复合材料残余应力的数值模拟

张志超, 王玉敏, 李玉芳, 柏春光

Numerical Simulation on Residual Stress of SiC Fiber Reinforced Titanium Matrix Composite

ZHANG Zhichao, WANG Yumin, LI Yufang, BAI Chunguang

表3 Ti-6Al-4V基体和包套材料性能[11]

Table 3 Material properties of Ti-6Al-4V matrix and capsule

Temperature/℃ 23 200 400 600 800 CTE α/(10-6℃-1) 8.9 - - - 9.8 Young's modulus E/GPa 105.0 94.7 84.1 74.2 62.8 Yield stress σy/MPa 890.9 690.9 563.6 19.09 10.91 Shear modulus H/GPa 0.53 0.67 0.69 0.21 0.13 Thermal conductivity (10-3kgmm/(sK)) 6.6 9.1 12.6 17.5 - Specific heat (103mm2/(s2K)) 565 574 649 770 959 Poisson ratio ν 0.34(all temp.) Density ρ(kgm-3) 4440(all temp.)