Mechanism of phase transformation in 2:17 type SmCo magnets investigated by phase stabilization
Mechanism of phase transformation in 2:17 type SmCo magnets investigated by phase stabilization
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DOI：
10.1016/j.scriptamat.2015.10.041
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发表时间：
2016-03
影响因子：
6
通讯作者：
X. Zhiqin;L. Liu;Zhuang Liu;M. Li;Don Lee;R. Chen;Y. Guo;A. Yan
中科院分区：
文献类型：
--
作者：
X. Zhiqin;L. Liu;Zhuang Liu;M. Li;Don Lee;R. Chen;Y. Guo;A. Yan
Sm(co0.6995 fe0.2 cu0.08 zr0.025)7.2磁体时效过程中，分别在微孪晶消失前和消失后形成两种片状相。微孪晶随无序的2:17R相析出而出现，随2:17R相有序而消失。Dy通过稳定2:17H相来研究这些转变。给出了一个简化的原子模型来描述微孪晶的形成，并提出了一个合理的假设来阐明这些转变的机理。
Two kinds of lamella phases were observed in the phase transformations during aging of Sm(Co0.695Fe0.2Cu0.08Zr0.025)7.2magnets, which formed before and after the disappearance of microtwins respectively. Microtwins appeared with the precipitation of disordered 2:17R phases and disappeared with 2:17R phase ordering. Dy was introduced to investigate these transformations by stabilizing the 2:17H phases. A simplified atomic model was given to describe the formation of microtwins and a reasonable assumption was proposed as well to clarify the mechanism of these transformations.