Effect of grain boundary character distribution on soft magnetic property of face-centered cubic FeCoNiAl0.2 medium-entropy alloy
Effect of grain boundary character distribution on soft magnetic property of face-centered cubic FeCoNiAl0.2 medium-entropy alloy
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DOI：
10.1016/j.matchar.2019.110028
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发表时间：
2020
影响因子：
4.7
通讯作者：
Qingchen Deng;Yajie Tang;Yunfeng Tan;X. Tan;Yang Yang-Yang;Hui Xu
中科院分区：
文献类型：
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作者：
Qingchen Deng;Yajie Tang;Yunfeng Tan;X. Tan;Yang Yang-Yang;Hui Xu
研究了晶界特征分布对铸态、变形和再结晶的单面心立方(FCC)相FeCoNiAl0.2中熵合金(MEA)软磁性能的影响。电子背散射衍射（EBSD）结果表明，大量随机晶界（71.3％）和Σ3晶界（55.2％）的存在分别是铸态和再结晶FeCoNiAl0.2MEA良好软磁性能的原因，因为有效降低了应变浓度。相比之下，小角度晶界（64.6%）的形成和严重的应变集中显着恶化了冷轧FeCoNiAl0.2合金的磁性能。晶粒尺寸的减小对于提高磁性能没有明显作用。亚晶界的成分分布似乎对研究样品的磁性能有边际影响。这表明晶界特征对软磁性能具有主导作用。
The impact of grain boundary character distribution on soft magnetic properties of as-cast, deformed and recrystallized FeCoNiAl0.2medium-entropy alloys (MEAs) with single face-centered cubic (FCC) phase was investigated. Electron backscatter diffraction (EBSD) results show that the existence of a large number of random grain boundaries (71.3%) and Σ3 boundary (55.2%) is responsible for good soft magnetic properties of as-cast and recrystallized FeCoNiAl0.2MEAs, respectively, due to effectively decreasing the concentration of strain. In contrast, the formation of low angle boundaries (64.6%) and the serious concentration of strain significantly deteriorate magnetic property of cold-rolled FeCoNiAl0.2alloy. The reduction of grain size has no obvious effect on improving magnetic properties. The compositional distribution at the sub-grain boundary appears to have marginal effect on magnetic properties of studied samples. It indicates that the grain boundary characteristics have predominant effect on soft magnetic properties.