Effect of C on Microstructure and Mechanical Property of Hot Rolled DP Steel

Le Yu Zhou; Dan Zhang; Ya Zheng Liu; Long Jiao Li

doi:10.4028/www.scientific.net/AMR.557-559.1387

Paper Titles

Calculation of Die Matching in Arithmetic Decrease Method and Optimization for Cold-Drawing Aluminum Round Tube
p.1369

Numerical Simulation of the Effect of Blowing Pressure on the Blow Molding of HDPE Oil Drum
p.1373

Influence of EVA Content on the Properties of Extrusion Molding WPCS
p.1378

Research on the Color Difference on Surface of 3104 Aluminum Alloy Stripes during Cold Continuous Rolling Process
p.1383

Effect of C on Microstructure and Mechanical Property of Hot Rolled DP Steel
p.1387

Research and Evaluation on the Machining Properties of Xylia Spp
p.1391

Rapid Growth of Tin Whiskers on the Surface of Sn3.8Ag0.7Cu1.0Y Alloy
p.1397

Synthesis and Characterization of Zinc Oxide Tetrapods from Zinc Galvanization Dross
p.1407

The Synthesis and Characterization of Ti-MCM-41 by Microwave Radiation
p.1411

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 557-559Effect of C on Microstructure and Mechanical...

Effect of C on Microstructure and Mechanical Property of Hot Rolled DP Steel

Abstract:

Two kinds of C-Si-Mn-Cr-Mo-Nb tested steels with different C content were disigned, and controlled rolling and controlled cooling experiment of tested steels have been carried out in lab to analyze the effect of C on microstructure and mechanical property of high strength hot rolled dual phase steel. It is shown that two kinds of tested steels obtained ferrite and martensite microstructure under controlled rolling and step cooling process. With the increase of C content from 0.032wt% to 0.064wt%, ferrite grain size refines from 9.8μm to 5.0μm, width of martensite colony reduces from 10μm to 5.8μm, and martensite volume fraction increases from 11% to 25%. Yielding strength of high C tested steel is higher than that of low C steel by 55MPa, and amplification of tensile strength is about 155MPa. Elongation ratio decreases about 6.4%. Increasing of yielding strength is determined by strengthening of ferrite grain refining. The amplification of tensile strength is effect by volume fraction and refining of strengthening phase.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Advanced Materials Research (Volumes 557-559)

Pages:

1387-1390

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.557-559.1387

Citation:

Cite this paper

Online since:

July 2012

Authors:

Le Yu Zhou, Dan Zhang, Ya Zheng Liu, Long Jiao Li

Keywords:

C Content, Hot Rolled DP Steel, Mechanical Property, Strengthening Phase

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] Ma Ming-tu, M. F. Shi. Advanced High Strength Steel and It's Applications in Automobile Industry [J]. Iron and steel, 2004, 39(7): 68-72 (in Chinese)

Google Scholar

[2] Tang Di, Mi Zheng-li, Cheng Yu-lai, et al. Technology and Research and Development of Advanced Automobile Steel Abroad [J]. 2005, 40(6): 1-5 (in Chinese)

Google Scholar

[3] Hong S C, Lee K S. Influence of deformation induced ferrite transformation on grain refinement of dual phase steel [J]. Materials Science and Engineering, 2002, A323: 148-159

DOI: 10.1016/s0921-5093(01)01359-4

Google Scholar

[4] Garrett R P, Xub S, Lin J, et al. A model for predicting austenite to bainite phase transformation in producing dual phase steels [J]. International Journal of Machine Tools & Manufacture, 2004, 44: 831-837

DOI: 10.1016/j.ijmachtools.2004.01.004

Google Scholar