CAJ | 학술논문

研究了原位合成15%FeS/Cu复合材料在热挤压过程中的动态再结晶行为以及该行为对其性能的影响规律.结果表明,由于FeS/Cu复合材料在挤压过程中,内部受力不均,其再结晶主要通过亚晶迁移机制和凸出形核机制两种方式进行.另外,在累积真应变4.0前后,硬度和导电率的变化表现为相反的变化趋势,主要是由于加工硬化和再结晶软化在复合材料内部所占比例不同决定的.
연구료원위합성15%FeS/Cu복합재료재열제압과정중적동태재결정행위이급해행위대기성능적영향규률.결과표명,유우FeS/Cu복합재료재제압과정중,내부수력불균,기재결정주요통과아정천이궤제화철출형핵궤제량충방식진행.령외,재루적진응변4.0전후,경도화도전솔적변화표현위상반적변화추세,주요시유우가공경화화재결정연화재복합재료내부소점비례불동결정적.
The influence of dynamic recrystallization and microstructure on the properties of FeS/Cu composites were analyzed in different hot extrusion processes. The results show that as a result of the uneven distribution of loading in the extrusion process, the nucleation mechanisms of dynamic recrystallization of the composite are the subgrain migration mechanism and the bulge nucleation mechanism, the pre and post cumulate true strain was 4.0, the hardness and electrical conductivity of the composite are different and the change trend are contrary, because of the different proportion of work hardening and dynamic recrystallization softening in the composites; to analysis on the effects of dynamic recrystallization on the performance are important to choose the optimum process.