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

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 t...

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Veröffentlicht in:Journal of materials science 2010-01, Vol.45 (2), p.490-495
Hauptverfasser: Zhang, Chunling, Cai, Dayong, Liao, Bo, Fan, Yunchang
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container_end_page 495
container_issue 2
container_start_page 490
container_title Journal of materials science
container_volume 45
creator Zhang, Chunling
Cai, Dayong
Liao, Bo
Fan, Yunchang
description 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.
doi_str_mv 10.1007/s10853-009-3966-x
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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. 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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.</abstract><cop>New York</cop><pub>Springer US</pub><doi>10.1007/s10853-009-3966-x</doi><tpages>6</tpages></addata></record>
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subjects Atmospheric corrosion
Characterization and Evaluation of Materials
Chemistry and Materials Science
Chromium
Classical Mechanics
Cooling
Copper
Corrosion
Corrosion resistance
Corrosion resistant steels
Crystallography and Scattering Methods
Dual phase steels
Duplex stainless steels
Hot rolling
Iron compounds
Martensite
Materials Science
Mechanical properties
Microstructure
Molybdenum
Nickel
Polymer Sciences
Solid Mechanics
Steel
Strain hardening
Structural steels
Tensile strength
Weathering
Weathering steels
title Using direct hot-rolling approach to obtain dual-phase weathering steel Cu–P–Cr–Ni–Mo
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