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Volume 8 Issue 4
Aug.  2017
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WU Jianzhong, YANG Wensheng, GUO Hanjie, YU Mengxi, SHI Xiao, DUAN Shengchao. Comprehensive strengthening mechanism of DH36 high-strength ship plate steel[J]. Nonferrous Metals Science and Engineering, 2017, 8(4): 19-25. DOI: 10.13264/j.cnki.ysjskx.2017.04.004
Citation: WU Jianzhong, YANG Wensheng, GUO Hanjie, YU Mengxi, SHI Xiao, DUAN Shengchao. Comprehensive strengthening mechanism of DH36 high-strength ship plate steel[J]. Nonferrous Metals Science and Engineering, 2017, 8(4): 19-25. DOI: 10.13264/j.cnki.ysjskx.2017.04.004
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Comprehensive strengthening mechanism of DH36 high-strength ship plate steel

  • School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials, Beijing 100083, China

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  • Received Date: November 27, 2016
  • Published Date: August 30, 2017
    Graphical Abstract
    • Abstract
  • DH36 steel is widely used in China currently as high strength hull structural steel. This paper adopts carbon replica, XRD diffraction, TEM observation and analysis method of controlled rolling and controlled cooling after the DH36 steel nano precipitates of type, morphology, size and number are analyzed in detail. The results show that the morphology of the precipitates in the microstructure of DH36 steel for the rules of the square, which is composed of (Ti, Nb) (C, N). The test of DH36 steel carbonitride precipitation volume fraction of the matrix is 0.00957%. The total contribution to the precipitation strengthening and fine grain strengthening is 211.24 MPa and 212.30 MPa Solid solution strengthening is 122.93 MPa and dislocation is 134.43 MPa.
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    • References (19)
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