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针对铁磁合金阻尼性能实验中出现的“瑞利现象”和“左移现象”[4～ 8] ,对溶质原子局部内应力源模型 [1] 作了改进 ,提出了位错与溶质原子交互作用局部内应力源模型 ,并通过测定Fe- Cr- Al和 Fe- Cr- Al- Si合金的矫顽力及晶格参数对合金的局部内应力进行了讨论 .结果指出 :只有施行充分的再结晶退火以充分降低合金的内应力 ,才能使铁磁合金的阻尼性能得到充分发挥 ;在不降低磁畴壁能密度 [14 ]的前提下 ,只有选择那些引起晶格畸变尽量小的原子作为合金元素才能有效地提高合金的阻尼性能
Aiming at the “Rayleigh phenomenon” and “shift to the left” phenomenon [4~8] in the experiment of damping performance of ferromagnetic alloys, the local stress source model of solute atoms [1] is improved and the dislocations interact with solute atoms The local stress source model is applied and the local internal stress of the alloy is discussed by measuring the coercivity and lattice parameters of the Fe-Cr-Al and Fe-Cr-Al-Si alloys.The results show that: Crystallization annealing to fully reduce the internal stress in order to make the damping properties of the ferromagnetic alloy can be fully exerted; without reducing the density of magnetic domain wall [14] under the premise that only those who choose lattice distortion caused by the smallest atoms as alloy Elements can effectively improve the damping properties of the alloy