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铁锰铝镍马氏体中的纳米级孪晶：背散射菊池衍射研究

Nanoscale twinning in Fe-Mn-Al-Ni martensite: a backscatter Kikuchi diffraction study.

作者信息

Fischer Peter D B, Martin Stefan, Walnsch Alexander, Thümmler Martin, Kriegel Mario J, Leineweber Andreas

机构信息

Institute of Materials Science, TU Bergakademie Freiberg, Gustav-Zeuner-Strasse 5, Freiberg, 09599, Germany.

出版信息

J Appl Crystallogr. 2021 Feb 1;54(Pt 1):54-61. doi: 10.1107/S1600576720013631.

DOI:10.1107/S1600576720013631
PMID:33833640
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7941309/
Abstract

Iron-based Fe-Mn-Al-Ni shape-memory alloys are of rather low materials cost and show remarkable pseudoelastic properties. To further understand the martensitic transformation giving rise to the pseudoelastic properties, different Fe-Mn-Al-Ni alloys have been heat treated at 1473 K and quenched in ice water. The martensite, which is formed from a body-centred cubic austenite, is commonly described as face-centered cubic (f.c.c.), even though there are also more complex, polytypical descriptions of martensite. The presently studied backscatter Kikuchi diffraction (BKD) patterns have been evaluated, showing a structure more complex than simple f.c.c. This structure can be described by nanoscale twins, diffracting simultaneously in the exciting volume. The twinned structure shows a tetragonal distortion, not uncommon for martensite in spite of the lack of interstitial elements. These features are evaluated by comparing the measured BKD patterns with dynamically simulated ones.

摘要

铁基Fe-Mn-Al-Ni形状记忆合金材料成本相当低，且具有显著的伪弹性性能。为了进一步了解产生伪弹性性能的马氏体相变，对不同的Fe-Mn-Al-Ni合金在1473 K下进行热处理并在冰水中淬火。由体心立方奥氏体形成的马氏体通常被描述为面心立方（f.c.c.），尽管马氏体也有更复杂的多型描述。对目前研究的背散射菊池衍射（BKD）图案进行了评估，结果表明其结构比简单的面心立方结构更复杂。这种结构可以用纳米级孪晶来描述，它们在激发体积中同时发生衍射。孪晶结构呈现出四方畸变，尽管缺乏间隙元素，但这在马氏体中并不罕见。通过将测量的BKD图案与动态模拟图案进行比较来评估这些特征。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f6c/7941309/b833dea4c041/j-54-00054-fig10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f6c/7941309/a12872ef43da/j-54-00054-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f6c/7941309/9c972aca16b2/j-54-00054-fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f6c/7941309/4f1c627bbf7b/j-54-00054-fig3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f6c/7941309/a2f5eb98c089/j-54-00054-fig4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f6c/7941309/f8a4db3af79e/j-54-00054-fig5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f6c/7941309/3ab916221941/j-54-00054-fig6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f6c/7941309/e616f95a1399/j-54-00054-fig7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f6c/7941309/c4d349f7816e/j-54-00054-fig8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f6c/7941309/bf439a2cf9f0/j-54-00054-fig9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f6c/7941309/b833dea4c041/j-54-00054-fig10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f6c/7941309/a12872ef43da/j-54-00054-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f6c/7941309/9c972aca16b2/j-54-00054-fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f6c/7941309/4f1c627bbf7b/j-54-00054-fig3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f6c/7941309/a2f5eb98c089/j-54-00054-fig4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f6c/7941309/f8a4db3af79e/j-54-00054-fig5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f6c/7941309/3ab916221941/j-54-00054-fig6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f6c/7941309/e616f95a1399/j-54-00054-fig7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f6c/7941309/c4d349f7816e/j-54-00054-fig8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f6c/7941309/bf439a2cf9f0/j-54-00054-fig9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7f6c/7941309/b833dea4c041/j-54-00054-fig10.jpg

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本文引用的文献

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