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Microstructure Evolution and Numerical Simulation of DP Steel TWBs During Warm Tensile Deformation

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Abstract:

The tensile tests of DP590 dual-phase steel tailor-welded blanks were carried out at different temperatures and strain rates. Quantitative analysis of metallographic was utilized to study the microstructure evolution of the base metal area and the weld zone of the tensile fracture. By combining the microstructure evolution model with the secondary development technologies of ABAQUS, the microstructure evolution of dual-phase steel tailor-welded blanks was simulated during warm tensile tests. The results show that, with the temperature increasing and strain rate decreasing, the dynamic recrystallization volume fraction of ferrite increases, and the martensite transform into equiaxed ferrite gradually. The results of microstructure simulation are in good agreement with experimental results.

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Periodical:

Advanced Materials Research (Volumes 418-420)

Pages:

1222-1227

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.418-420.1222

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Online since:

December 2011

Authors:

Lu You Yue, Zhong Fu Huang, Zhen Liang He, Man Guo Jiang, Wei Chen

Keywords:

Dual Phase Steel, Micro-Structure Evolution, Numerical Simulation, Tailor Welded Blanks

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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