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研究了0.5%(原子分数)B对Fe83Ga17合金室温力学性能的影响及(Fe81Ga19)99.5B0.5轧制薄片磁致伸缩性能。结果表明,少量B添加提高了Fe-Ga合金的室温塑性,实现(Fe81Ga19)99.5B0.5合金的轧制成形。热处理对(Fe81Ga19)99.5B0.5合金薄片材料磁致伸缩性能有很大影响。在同一热处理制度条件下,磁致伸缩性能随变形量的增加而减小;对于变形量为93.5%的样品,同一热处理时间,样品磁致伸缩性能随热处理温度的升高而增加,同一热处理温度时,样品磁致伸缩性能都表现出先升高后降低的变化趋势,样品在1300℃保温2h后,磁致伸缩性能最好,达到1.65×10-4。热处理对(Fe81Ga19)99.5B0.5合金薄片材料磁致伸缩性能的影响归因于对样品织构的影响。具有{100}〈012〉织构样品的磁致伸缩性能最高,而{111}〈110〉和{111}〈112〉织构对应的磁致伸缩性能较低。
The effects of 0.5% (atomic fraction) B on the mechanical properties of Fe83Ga17 alloy at room temperature and the magnetostrictive properties of (Fe81Ga19) 99.5B0.5 rolled sheet were investigated. The results show that the addition of a small amount of B improves the room-temperature plasticity of Fe-Ga alloy and realizes the rolling forming of (Fe81Ga19) 99.5B0.5 alloy. The heat treatment has a great influence on the magnetostrictive properties of (Fe81Ga19) 99.5B0.5 alloy sheet. Under the same heat treatment condition, the magnetostriction decreases with the increase of deformation. For the sample with 93.5% deformation, the magnetostriction increases with the increase of heat treatment temperature and the same heat treatment temperature , The magnetostrictive properties of the samples all showed a trend of first increasing and then decreasing. After the samples were heated at 1300 ° C for 2h, their magnetostrictive performance was the best, reaching 1.65 × 10-4. The effect of heat treatment on the magnetostrictive properties of (Fe81Ga19) 99.5B0.5 alloy sheet material is attributed to the effect on the texture of the sample. The samples with {100} <012> texture exhibit the highest magnetostriction but the {111} <110> and {111} <112> texture with lower magnetostriction.