Abstract Due to the rapid growth of precipitated nanoparticles in ultrahigh Fe content nanocrystalline alloys, we propose a new method of low-pressure stress annealing (LPSa) to control crystallization behavior to achieve excellent magnetic properties and mechanical properties of Fe85.7Si0.5B9.3Cu0.7P3.5C0.3 nanocrystalline alloy. It demonstrates that LPSa promotes the precipitation of α-Fe phase and suppresses the growth of nanoparticles, which obtains a higher saturation magnetization of 202.1–206.6 emu/g and a lower coercivity of 6.7–8.2 A/m. Besides, the formation of fine and uniform nanocrystalline structure induced by LPSa achieves the lower value and uniform distribution of hardness and Young's modulus, resulting in softening.

中文翻译：

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低压应力退火诱导超高Fe含量FeSiBCuPC纳米晶合金的软化和磁性能

摘要 由于在超高 Fe 含量纳米晶合金中析出的纳米粒子快速生长，我们提出了一种新的低压应力退火 (LPSa) 方法来控制结晶行为，以实现 Fe85.7Si0.5B9.3Cu0 优异的磁性能和机械性能。 .7P3.5C0.3纳米晶合金。这表明LPSa促进了α-Fe相的沉淀并抑制了纳米颗粒的生长，从而获得了202.1-206.6 emu/g的较高饱和磁化强度和6.7-8.2 A/m的较低矫顽力。此外，LPSa 诱导形成精细均匀的纳米晶结构，实现了硬度和杨氏模量的较低值和均匀分布，导致软化。