Characteristics of the γ→α transformation in Fe-Mn alloys

被引：66

作者：

Li, CM ^{[1
]}

Sommer, F ^{[1
]}

Mittemeijer, EJ ^{[1
]}

机构：

[1] Max Planck Inst Met Res, D-70174 Stuttgart, Germany

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2002年 / 325卷 / 1-2期

关键词：

phase transformations; Fe-Mn alloys; thermodynamics; differential thermal analysis (DTA); dilatometry;

D O I：

10.1016/S0921-5093(01)01459-9

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The relationships between the lattice parameters of austenite and ferrite in Fe-Mn alloys and Mn content were established by means of X-ray diffraction and revised literature data. These results were used to calculate the dilatation due to the isothermal gamma-->alpha transformation. The dilatometric experimental results are in very good agreement with the calculations. It was found that the increase of hardness of the alpha phase is a linear function of Mn content and is mainly determined by the lattice strain of this phase. The Curie temperature of the alloy was established as a function of Mn composition. The austenite fraction and enthalpy difference between ferrite and austenite accompanying the gamma-->alpha transformation were also determined as a function of temperature and Mn content by means of isochronal DTA measurements. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：307 / 319

页数：13

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