退火工艺对 FeCo软磁合金微观组织与力学性能的影响

The effects of annealing on microstructure and mechanical properties of FeCo soft magnetic alloys

摘要:

对经退火热处理的FeCo软磁合金带材的力学性能进行了研究，同时对比了1J22合金和高强度FeCo合金冷轧带材在不同热处理温度下退火后的组织变化。结果发现：随着退火温度的上升，两种合金的强度均下降、晶粒的粒径均变大；在850℃时，1J22合金晶粒已经明显粗化，高强度FeCo合金晶粒有略微长大，但晶粒较均匀；在880℃时，两种合金晶粒均明显粗化，且不均匀。

Abstract:

The mechanical properties of cold-rolling belts of FeCo soft magnetic alloys were investigated . The FeCo alloys as a benchmark compared to 1J22 alloys were annealed at different temperature for micro-structure observation .It was found that the strength of the alloys decreases with the rising temperature , , and average grain size vice versa .At temperature of 850℃ ,the grains of 1J22 alloys have become coarse grains and the grains of high strength FeCo alloy grow slightly .At temperature of 880℃ ,the grains of two alloys both obviously was evolved into coarse and asymmetry grains .