Advertisement

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

  • Chunling Zhang
  • Dayong Cai
  • Bo Liao
  • Yunchang Fan
Article

Abstract

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.

Keywords

Ferrite Austenite Martensite Bainite Pearlite 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgement

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

References

  1. 1.
    Erdogan M, Tekeli S (2002) Mater Des 23:597Google Scholar
  2. 2.
    De Cosmo M, Galantucci LM, Tricarico L (1999) J Mater Process Technol 92–93:486CrossRefGoogle Scholar
  3. 3.
    Nam WJ, Bae CM (1999) J Mater Sci 34:5661. doi: 10.1023/A:1004705705208 CrossRefGoogle Scholar
  4. 4.
    Hong SC, Lee KS (2002) Mater Sci Eng A323:148Google Scholar
  5. 5.
    Zhang C, Cai D, Liao B (2004) Mater Lett 58:1524CrossRefGoogle Scholar
  6. 6.
    Zhang C, Liao B, Cai D (2007) Mater Des 28:1760Google Scholar
  7. 7.
    Zhang C, Cai D, Liao B (2005) Mater Charact 55:378CrossRefGoogle Scholar
  8. 8.
    Greday T, Mathy H, Messien P (1979) In: Kot RA, Morris JM (eds) Structure and properties of dual-phase steels. AIME, New YorkGoogle Scholar
  9. 9.
    Coldren AP, Tither G (1978) J Metals 4:6Google Scholar

Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Chunling Zhang
    • 1
  • Dayong Cai
    • 1
  • 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

Personalised recommendations