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2014, Volume 16, Issue 1

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Strategic Study of CAE >> 2014, Volume 16, Issue 1

New boron steel development and process research of hot stamping

1. China Automotive Engineering Research Institute Co. Ltd.，Chongqing 400039，China;

2. College of Materials Science and Engineering，Huazhong University of Science and Technology，Wuhan 430074，China;

3. The State Key Laboratory of Rolling and Automation，Northeastern University，Shenyang 110819

Funding project：国家科技支撑计划（2011BAG03B02） Received: 2013-10-25 Available online: 2013-12-23 15:23:20.000
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Abstract

Based on the 22MnB5's composition，new boron steel applied on hot stamping was developed by adding some special chemical elements，such as adding Cr，Mo. Materials properties， materials continuous cooling transformation curves（CCT） and heat- treatment properties of new boron steel were tested by metallographic microscope、micro- hardness and electronic tensile testing machines. Process parameters testing，parts production and part properties analysis were also finished by the middle production line and some other testing equipments. Tests result show that the new boron steel owned great oxidation resistance properties and fine microstructure，the new boron steel and 22MnB5 materials have the same strength levels，but new boron steel have better elongation than 22MnB5.

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References

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