Al-AlN异构纳米复合材料的组织构型与热稳定性

聂金凤, 伍玉立, 谢可伟, 刘相法

Microstructure and Thermal Stability of Heterostructured Al-AlN Nanocomposite

NIE Jinfeng, WU Yuli, XIE Kewei, LIU Xiangfa

表1 Al-AlN纳米复合材料500℃热暴露处理不同时间的拉伸力学性能

Table 1 Mechanical properties of the heterostructured Al-AlN nanocomposite before and after thermal exposure tests at 500oC for different holding time

State YS / MPa UTS / MPa δ / % As-received 232 ± 13 299 ± 20 12.9 ± 1.71 500oC, 5 h 290 ± 4 350 ± 6 3.3 ± 0.70 500oC, 10 h 315 ± 10 390 ± 10 2.2 ± 0.46 500oC, 15 h 259 ± 8 323 ± 11 6.9 ± 0.88 500oC, 20 h 248 ± 5 312 ± 6 6.6 ± 0.17 500oC, 50 h 236 ± 9 298 ± 13 8.1 ± 1.79 500oC, 100 h 251 ± 10 321 ± 11 6.9 ± 0.75