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- Title
Using direct hot-rolling approach to obtain dual-phase weathering steel Cu–P–Cr–Ni–Mo.
- Authors
Chunling Zhang; Dayong Cai; Bo Liao; Yunchang Fan
- 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.
- Subjects
WEATHERING; STEEL; COOLING; MICROSTRUCTURE; MECHANICAL properties of metals
- Publication
Journal of Materials Science, 2010, Vol 45, Issue 2, p490
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-009-3966-x