基于晶簇非晶体学对称性的立方α-锰向六方转变的结构模型

IF 0.6 4区材料科学 Q4 METALLURGY & METALLURGICAL ENGINEERING Metal Science and Heat Treatment Pub Date : 2024-06-29 DOI:10.1007/s11041-024-01024-2

A. L. Talis, V. S. Kraposhin

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引用次数: 0

摘要

提出了立方α-锰向高压六方紧密堆积ε-锰相转变的结构模型。该模型基于三重四面体向八面体的转化，通过移动由相邻四面体面形成的非平面 "菱形 "的对角线来实现。这种转换系统将四面体 α -Mn 螺旋的一个片段转换成由最接近六边形堆积的八面体组成的棒的一个片段。该模型考虑到了所考虑的晶体相碎片的非晶体学对称性。

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A Structural Model of Transition of Cubic α-Mn Into a Hexagonal Modification Based on Noncrystallographic Symmetry of Clusters

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.

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来源期刊

Metal Science and Heat Treatment 工程技术-冶金工程

CiteScore

1.20

自引率

16.70%

发文量

102

审稿时长

4-8 weeks

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.