{"title":"A Structural Model of Transition of Cubic α-Mn Into a Hexagonal Modification Based on Noncrystallographic Symmetry of Clusters","authors":"A. L. Talis, V. S. Kraposhin","doi":"10.1007/s11041-024-01024-2","DOIUrl":null,"url":null,"abstract":"<p>A structural model of the transformation of cubic α-Mn into high-pressure hexagonal close-packed ε -Mn phase is suggested. The model is based on the transformation of a triple of tetrahedrons into an octahedron, implemented through a shift of the diagonal of a nonplanar “rhombus” formed by the faces of neighboring tetrahedrons. Asystem of such transformations transfers a fragment of a tetrahedral α -Mn spiral into a fragment of a rod composed of octahedrons in hexagonal closest packing. The model takes into account the noncrystallographic symmetry of the considered fragments of the crystalline phases.</p>","PeriodicalId":701,"journal":{"name":"Metal Science and Heat Treatment","volume":"66 1-2","pages":"101 - 106"},"PeriodicalIF":0.6000,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Metal Science and Heat Treatment","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s11041-024-01024-2","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
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Abstract
A structural model of the transformation of cubic α-Mn into high-pressure hexagonal close-packed ε -Mn phase is suggested. The model is based on the transformation of a triple of tetrahedrons into an octahedron, implemented through a shift of the diagonal of a nonplanar “rhombus” formed by the faces of neighboring tetrahedrons. Asystem of such transformations transfers a fragment of a tetrahedral α -Mn spiral into a fragment of a rod composed of octahedrons in hexagonal closest packing. The model takes into account the noncrystallographic symmetry of the considered fragments of the crystalline phases.
期刊介绍：
Metal Science and Heat Treatment presents new fundamental and practical research in physical metallurgy, heat treatment equipment, and surface engineering.
Topics covered include:
New structural, high temperature, tool and precision steels;
Cold-resistant, corrosion-resistant and radiation-resistant steels;
Steels with rapid decline of induced properties;
Alloys with shape memory effect;
Bulk-amorphyzable metal alloys;
Microcrystalline alloys;
Nano materials and foam materials for medical use.
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