Thermal aging effects on magnetisation reversals in a pre-deformed Fe-1wt%Cu alloy studied via first-order reversal curves
Thermal aging effects on magnetisation reversals in a pre-deformed Fe-1wt%Cu alloy studied via first-order reversal curves
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热%20时效%20效果%20on%20磁化%20反转%20in%20a%20预变形%20Fe-1wt%Cu%20合金%20研究%20via%20一阶%20反转%20曲线
DOI：
10.1080/09500839.2019.1660011
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发表时间：
2019
影响因子：
1.2
通讯作者：
Suzuki Jun-ichi
中科院分区：
文献类型：
--
作者：
Kobayashi Satoru;Kawagoe Riko;Murakami Hiroaki;Ohishi Kazuki;Kawamura Yukihiko;Suzuki Jun-ichi
本文报道了一种具有不同轧制压下程度的热时效Fe-1wt%Cu合金的一阶反转曲线（FORCs）测量结果。我们发现，对于高滚动还原的样品，FORC分布在高开关场和相互作用场处有一个峰值，并且在老化后该峰值迅速向低场移动，这与峰值的缩小有关。相反，在老化超过10,000 min后，峰向更高的场进一步移动，这与峰的展宽有关。结果表明，在热时效过程中，由于Cu的析出和恢复，材料的组织均匀性和硬化性发生了竞争性变化，这与小角和广角中子散射数据一致。
We report the results of measurements of first-order reversal curves (FORCs) for a thermally aged Fe-1wt%Cu alloy with different levels of rolling reduction. We find that the FORC distribution has a peak at high switching and interaction fields for samples with high rolling reductions and that this peak rapidly shifts towards lower fields after aging, which is associated with a narrowing of the peak. Conversely, after aging for more than 10,000 min, the peak exhibits an additional shift towards higher fields, which is associated with a broadening of the peak. These results indicate that both the microstructural homogeneity and the material hardening changes during thermal aging in a competitive way due to recovery and Cu precipitation, which is consistent with small-angle and wide-angle neutron scattering data.
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