Abstract

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°; in the standard phenomenological theory, it was 10°. 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.

中文翻译：

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Fe合金的马氏体相变晶体学分析及机理

摘要

已经开发了马氏体相变晶体学理论的新版本，其中代替贝恩变形，通过沿晶体孪生系统的剪切力和在三个相互垂直的方向上尺寸的附加变化来进行晶格变形。在提出的变体中，马氏体晶体的弛豫旋转角约为1.8°；在标准现象学理论中，它是10°。新版本使建立马氏体相变时的晶格变形机理，确定弛豫旋转角度以及对各种合金中的马氏体相变进行晶体学分析成为可能。发现中碳钢中位错马氏体的晶体（板条）的形成是随着碳的重新分布而发生的。