Crystallographic Analysis and Mechanism of Martensitic Transformation in Fe Alloys

被引：8
|
作者：
Gundyrev, V. M. [1 ]
Zeldovich, V., I [1 ]
Schastlivtsev, V. M. [1 ]
机构：
[1] Russian Acad Sci, Mikheev Inst Met Phys, Ural Branch, Ekaterinburg 620108, Russia
来源：
PHYSICS OF METALS AND METALLOGRAPHY | 2020年 / 121卷 / 11期
关键词：
martensitic transformation; crystallographic analysis; iron alloys; lattice deformation; invariant-lattice deformation;
D O I：
10.1134/S0031918X20110046
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
A new version of the crystallographic theory of martensitic transformation has been developed, where instead of Bain deformation, the deformation of the lattice was performed by a shear along the twinning system of crystals and an additional change in dimensions in three mutually perpendicular directions. In the proposed variant, the angle of relaxation rotation of martensite crystal was about 1.8 degrees; in the standard phenomenological theory, it was 10 degrees. The new version made it possible to establish the mechanism of lattice deformation upon martensitic transformation, to determine the angle of relaxation rotation, and to carry out crystallographic analysis of martensitic transformation in various alloys. The formation of crystals (laths) of dislocation martensite in medium-carbon steel was found to occur with redistribution of carbon.
引用
收藏
页码：1045 / 1063
页数：19
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