Journal of Materials Science

, Volume 45, Issue 2, pp 490–495 | Cite as

Using direct hot-rolling approach to obtain dual-phase weathering steel Cu–P–Cr–Ni–Mo

  • Chunling Zhang
  • Dayong CaiEmail author
  • Bo Liao
  • Yunchang Fan


A weathering steel Cu–P–Cr–Ni–Mo has been developed which exhibits special continuous cooling transformation characteristics which permit the desired dual-phase (DP) microstructure to be obtained by direct hot-rolling. Hot-rolling procedures to obtain DP microstructures have been designed based on the continuous cooling transformation diagram of weathering steel Cu–P–Cr–Ni–Mo. The results show that the microstructures of DP weathering steels Cu–P–Cr–Ni–Mo are characterized by an irregular distribution of island-shaped martensite–austenite in the matrix of polygonal ferrite grains. DP weathering steel Cu–P–Cr–Ni–Mo with favorable corrosion resistant property, weldability and mechanical properties, such as, high strain hardening exponent values, a lower ratio of yield to tensile strength, and higher strengths; and is obtained successfully by direct hot-rolling.


Ferrite Austenite Martensite Bainite Pearlite 



The project supported by Natural Science Foundation-Steel and Iron Foundation of Hebei Province, P. R. China (No. E2008000843).


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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Chunling Zhang
    • 1
  • Dayong Cai
    • 1
    Email author
  • Bo Liao
    • 1
  • Yunchang Fan
    • 2
  1. 1.Key Laboratory of Metastable Materials Science and TechnologyYanshan UniversityQinhuangdaoChina
  2. 2.Department of Materials Science and EngineeringShijiazhuang Rail InstituteShijiazhuangChina

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