【摘要】 采用集束拉拔法制备铁铬铝金属纤维,研究了工艺过程和热处理制度对铁铬铝金属纤维的影响。结果表明,集束拉拔法能够制备铁铬铝金属纤维,其纤维的单丝断裂强力随形变量的增加而缓慢增加;铁铬铝合金在纤维化加工过程没有发生相变,加工硬化是纤维单丝断裂强力提高的主要原因。铁铬铝复合体在加工过程的中间热处理温度应控制在650℃以下,时间应不超过30min,以避免合金中Al含量下降,降低其抗氧化性能,影响纤维的使用。同时,避免由于高温下Al迅速向Cu隔离层扩散,造成Cu隔离层破坏,引起纤维粘连,增加后续化学分离的难度。更多还原

【Abstract】 A new preparation method for the FeCrAl fiber by bundle drawing was reported in this paper. The influences of working and heat treatment process on the performance of FeCrAl fiber were studied. The results show that the tensile force of monofilament increases gradually with the increase of deformation, which is due to work hardening. During bundle drawing process, there is no transformation to occur in the fiber. The annealing process for cladding FeCrAl has great influence on the Al content in the fiber, by which the Al content in the fiber decreases rapidly with the rising temperature over 650 ℃ , as a result, the oxidation resistance of the fiber is dropped down, and the Cu cladding lager broken because of diffusing Al in the Cu lager at high temperature, which causes the fibers adhesion each other. In that cases, it is some difficult to separate the fibers. So the suitable annealing process should be at the temperature less than 650 ℃ for less than 30 min.更多还原