Magnetic and X-ray diffraction measurements for the determination of retained austenite in TRIP steels

被引：216

作者：

Zhao, L

van Dijk, NH

Brück, E

Sietsma, J

van der Zwaag, S

机构：

[1] Netherlands Inst Met Res, Delft, Netherlands

[2] Delft Univ Technol, Mat Sci Lab, NL-2628 AL Delft, Netherlands

[3] Delft Univ Technol, Interfac Reactor Inst, NL-2629 JB Delft, Netherlands

[4] Univ Amsterdam, Van der Waals Zeeman Inst, NL-1018 XE Amsterdam, Netherlands

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2001年 / 313卷 / 1-2期

关键词：

TRIP steels; retained austenite; magnetization; microstructure;

D O I：

10.1016/S0921-5093(01)00965-0

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The accurate determination of the volume fraction of retained austenite is of great importance for the optimization of transformation induced plasticity (TRIP) steels. In this work, two aluminium-containing TRIP steels are studied by means of magnetization and X-ray diffraction (XRD) measurements. By fitting the field dependence of the approach to saturation in the magnetization curves, the saturation magnetization is determined, which is linearly related to the volume fraction of retained austenite. Moreover, information with respect to the microstructure can be obtained from the fitting parameters and the demagnetizing factor for the magnetization curve. The volume fractions obtained from the magnetization measurements are compared with data from XRD measurements. A discussion of the data suggests that magnetization measurements lead to more reliable results and a more sensitive detection of the retained austenite than XRD measurements. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：145 / 152

页数：8

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