Effect of high magnetic field on phase and structural transformations in ferromagnetic alloys. Review
Effect of high magnetic field on phase and structural transformations in ferromagnetic alloys. Review
复制标题
高磁场对铁磁合金相变和结构转变的影响。
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
I. Gervasyeva
中科院分区：
文献类型：
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作者：
V. Milyutin;I. Gervasyeva
综述了强直流磁场对不同铁磁合金结构和相变影响的相关研究。本文介绍了Fe-C、Fe-Co、Fe-Si、Mn-Bi、Fe-Ni、Ni-Co等合金在高温和感应强度达45 T的磁场作用下同时冲击的主要实验结果。强磁场对相变的影响主要是平衡温度的变化，其影响可达几十度。阐述了这种效应的现代观点，认为是由于母相和出现相的磁性不同而改变了外磁场下相变的热力学条件。在理论和实验测定的相变温度变化幅度在大多数情况下，有一个显着的差异。讨论了产生这种差异的可能原因。此外，回顾了磁场对冷轧铁磁合金组织转变，特别是回复和再结晶的影响的研究结果。结果表明，磁场延缓回复过程，并进一步促进某些织构组分的优先形成。目前，科学文献中对观察到的影响的性质没有达成共识。在本文中，批判性的分析不同作者提出的方法来解释实验结果。的问题的当前状态进行了描述;在结论中，热激活过程中的应用条件下的高直流磁场的进一步研究的前景表示。
Review of relevant research about the effect of high DC magnetic field on structural and phase transformations in different ferromagnetic alloys are presented. Main experimental results of simultaneous impact high temperature and magnetic field with induction up to 45 T on alloys Fe-C, Fe-Co, Fe-Si, Mn-Bi, Fe-Ni, Ni-Co and other are presented. The main high magnetic field effect on a phase transformation is equilibrium temperature changing, which reaches tens degrees. Modern views about cause of such effect, which consist in changing of thermodynamic conditions of transformation under external magnetic field due different magnetic properties between parent and appearing phase are described. In the theoretical and experimental determination of the phase transformation temperature shift magnitude in most cases there is a significant discrepancy. The probable causes such discrepancy are discussed. Moreover, review of results on investigations effect of magnetic field on structure transformations; in particular recovery and recrystallization in cold-rolled ferromagnetic alloys are presented. It is shown, that magnetic field retards recovery process and furthermore promotes preferential formation of certain texture components. Nowadays there is no consensus in the scientific literature on the nature of the observed effects. In this paper, critical analyses of the approaches proposed by different authors to the interpretation of experimental results are presented. The current state of the problem is described; in conclusion, the prospects for further studies of thermally activated processes in the conditions of application of a high DC magnetic field are indicated.