CAJ | 학술논문

研究了7075/SiCp复合材料T6峰时效热处理工艺，分析了120℃时效温度下不同时效时间7075/SiCp复合材料显微组织形貌和第二相析出规律。结果表明：7075/SiCp复合材料T6峰时效热处理工艺为470℃/30min+120℃/20h；SiCp颗粒的加入使第二相更容易在其附近形核和长大；7075/SiCp复合材料热挤压过程中发生动态再结晶，距SiC颗粒较近区域保留部分动态回复组织；由于空位分布分散，无沉淀析出带（PFZ）不明显。
연구료7075/SiCp복합재료T6봉시효열처리공예，분석료120℃시효온도하불동시효시간7075/SiCp복합재료현미조직형모화제이상석출규률。결과표명：7075/SiCp복합재료T6봉시효열처리공예위470℃/30min+120℃/20h；SiCp과립적가입사제이상경용역재기부근형핵화장대；7075/SiCp복합재료열제압과정중발생동태재결정，거SiC과립교근구역보류부분동태회복조직；유우공위분포분산，무침정석출대（PFZ）불명현。
Heat treatment processing of 7075/SiCp composite with T6 peak was investigated. Microstructure morphology and precipitation rule of second phase with various aging time at 120 ℃ were also studied. The results showed that heat treatment processing of 7075/SiCp composite with T6 peak was 470℃/30min+120℃/20h;second phase was easier to precipitate in composite due to the addition of SiCp particle;dynamic recrystallization existed in 7075/SiCp composite during hot extrusion, dynamic recovery area were reserved nearby SiC particle;precipitate free zone (PFZ) was not obvious due to dispersion of vacancy.