Model of the B2 → R martensitic transformation in alloys with a B2 superstructure

被引：0
|
作者：
Zolotukhin, Yu. S. [1 ]
Lotkov, A. I. [1 ]
Klopotov, A. A. [2 ]
Grishkov, V. N. [1 ]
机构：
[1] Russian Acad Sci, Siberian Branch, Inst Strength Phys & Mat Sci, Tomsk 634003, Russia
[2] Tomsk State Univ Architecture & Bldg, Tomsk 634003, Russia
来源：
PHYSICS OF METALS AND METALLOGRAPHY | 2012年 / 113卷 / 06期
关键词：
B2; structure; R-0; space group; irreducible representations; induced representations; basis vectors of irreducible representations; SHAPE-MEMORY ALLOYS; PHASE STRUCTURE; REFINEMENT; NI;
D O I：
10.1134/S0031918X12060142
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Various B2 -> R structural transformations that can occur through an intermediate R (0) structure belonging to the space group D (3d) (3) have been considered. Subgroups with a hexagonal lattice (group D (3d) (3) ) related to the symmetry breakdown of the R (0) structure due to atomic displacements with wave vectors belonging to the two-arm star , K-13(H) = {k(1)(H) = 1/3(b(1)(H) + b(2)(H)), k(2)(H) = k(1)(H)} where b (1) (H) and b (2) (H) are the reciprocal-lattice vectors of the hexagonal system, have been calculated. A crystallographic model of the possible transformations of the B2 structure into the R martensite, which has a single (common for all transformations) order parameter, has been suggested.
引用
收藏
页码：541 / 549
页数：9
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