Effects of aluminum on the microstructure and phase transformation of TRIP steels

被引：43

作者：

Lim, NamSuk ^{[1
]}

Park, HyungSeok ^{[1
]}

Kim, SungIl ^{[2
]}

Park, ChanGyung ^{[1
,3
]}

机构：

[1] Pohang Univ Sci & Technol POSTECH, Dept Mat Sci & Engn, Pohang 790784, South Korea

[2] POSCO Tech Res Lab, Gwangyang 545090, South Korea

[3] Pohang Univ Sci & Technol POSTECH, Natl Ctr Nanomat Technol NCNT, Pohang 790784, South Korea

来源：

METALS AND MATERIALS INTERNATIONAL | 2012年 / 18卷 / 04期

关键词：

atom-probe field-ion microscopy (AP-FIM); microstructure; phase transformation; MECHANICAL-PROPERTIES; BAINITE; AUSTENITE; SI; IRON;

D O I：

10.1007/s12540-012-4012-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the present study, CMnSiAl transformation induced plasticity (TRIP) steels containing different amounts (0.04, 1.00, and 2.00 wt%) of Al were fabricated by thermo-mechanically processing. The influences of Al on the microstructure of cold-rolled TRIP steels was evaluated by various analytical techniques, including transmission electron microscopy, X-Ray diffractometry, electron back scattered diffraction and atom probe tomography (APT). The experimental results revealed that the TRIP steel containing 1.00 wt% Al showed the maximum volume fraction of retained austenite (RA) and the greatest elongation. However, the average carbon content of RA increased with the increase in Al content. Additionally, the distribution of alloying elements in the constituent phases was studied by APT.

引用

页码：647 / 654

页数：8

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