Research of Microstructure and Mechanical Properties of the Cold Rolled Hot-Dip Galvanizing DP450 Steel with Low Carbon and High Chromium

Abstract:

A new cold rolled hot-dip galvanizing DP450 steel with low carbon and high chromium was designed and effect of the galvanizing processes on the microstructure and mechanical properties was also investigated. At last, it was compared with the referenced DP450 steel which was already produced in industry. The results show that microstructure of the experimental steel consists of regular polygonal ferrite, almost 1% MA island and little bainite. The industrial experimental cold-rolled galvanizing DP steel has excellent combined mechanical properties as follow: yield strength is 306 MPa, tensile strength is 467 MPa and elongation (A80) is 33%. Compared to the referenced steel, the experimental DP450 steel has lower yield strength, better elongation and better forming performance, accordingly.

• Periodical: Advanced Materials Research (Volumes 1004-1005)
• Pages: 188-192
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1004-1005.188
• Online since: August 2014
• Authors: Yun Han*, Shuang Kuang, Hua Sai Liu, Ying Hua Jiang, Guang Hui Liu
• Keywords: Cold Rolled Galvanizing, DP Steel, High Chromium, Microstructure and Mechanical Properties

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