Elemental segregation to twin boundaries in a MnAl ferromagnetic Check for Heusler alloy
Elemental segregation to twin boundaries in a MnAl ferromagnetic Check for Heusler alloy
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DOI：
10.1016/j.scriptamat.2018.06.037
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发表时间：
2018-10-01
影响因子：
6
通讯作者：
Gault, B.
中科院分区：
文献类型：
--
作者：
Palanisamy, D.;Raabe, D.;Gault, B.
用电子显微镜和原子探针层析相结合的方法研究了无稀土铁磁性MnAl-Heusler合金中单孪晶界的结晶学和化学结构。结果表明，Mn沿孪晶界有明显的偏析。浓缩了大约。类似于8at.%的Mn沿孪晶界测量，孪晶界外有一个受限的亏损，这表明在块状相变过程中发生了短程溶质扩散。(C)2018 Acta Materialia Inc.由Elsevier Ltd.出版。保留所有权利。
Electron microscopy and atom probe tomography were combined to investigate the crystallography and chemistry of a single twin boundary (TB) in a rare-earth-free ferromagnetic MnAl Heusler alloy. The results establish a significant segregation of Mn along the twin boundaries. An enrichment of approx. similar to 8 at.% Mn was measured along the twin boundary with a confined depletion outside the twin boundary, suggesting short range solute diffusion occurring during massive transformation. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.