Influence of Isothermal Deformation Conditions on The Mechanical Properties of 22MnB5 HPF Steel

被引：31

作者：

Fan, D. W. ^{[1
]}

Park, R. B. ^{[2
]}

Cho, Y. R. ^{[2
]}

De Cooman, B. C. ^{[1
]}

机构：

[1] Pohang Univ Sci & Technol, Grad Inst Ferrous Technol, Pohang 790784, South Korea

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

来源：

STEEL RESEARCH INTERNATIONAL | 2010年 / 81卷 / 04期

关键词：

Hot Press Forming; Hot Stamping; Martensite; Phase Transformations; DUAL-PHASE STEELS;

D O I：

10.1002/srin.201000008

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

In the present study, the aluminized 22MnB5 Hot Press Forming (HPF) steel was deformed isothermally in the temperature range of 600-800 degrees C. The specimens were deformed with 0%, 10% and 30% engineering strain at a strain rate of 0.5/s. Mechanical stabilization of austenite during phase transformation was observed. The influence of strain rate was also studied. It was found that the martensite transformation was affected by the combined effect of mechanical stabilization and dynamic recovery The influence of high temperature deformation on the final microstructure, microhardness and mechanical properties were studied. Deformation applied below 750 degrees C resulted in a significant decrease of the strength and the hardness. The ferrite fraction and morphology had a clear effect on the room temperature tensile fracture morphology.

引用

页码：292 / 298

页数：7

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