The Experts below are selected from a list of 318 Experts worldwide ranked by ideXlab platform

Xiaoqin Shen - One of the best experts on this subject based on the ideXlab platform.

  • microstructure and Intergranular Corrosion behavior of haz in dp tig welded dss joints
    Journal of Materials Processing Technology, 2018
    Co-Authors: Shengyong Gu, Xiaoqin Shen
    Abstract:

    Abstract In this study, 10.8-mm-thick workpieces of S32101 duplex stainless steel were welded using a keyhole deep penetration tungsten inert gas welding system. The misorientation angle distribution of grain boundaries in the heat affected zone was analyzed using the electron backscatter diffraction technique. Double-loop electrochemical potentiokinetic reactivation tests were performed to assess the Intergranular Corrosion resistance, based on the degree of sensitization. The volume fractions of ferrite and austenite and the grain boundary misorientation angle affect the Intergranular Corrosion of the welded joints. The relationship between the grain boundary misorientation angle of the austenite and the degree of sensitization was established. The volume fraction of austenite and the frequency of Σ3 coincidence site lattice boundary, increases with the increasing heat input. The misorientation angle distribution in the austenite, the frequency of Σ3 coincidence site lattice boundary, and the volume fraction of CrN influence the Intergranular Corrosion resistance of the heat affected zone.

Shuxin Li - One of the best experts on this subject based on the ideXlab platform.

  • investigation of Intergranular Corrosion of 316l stainless steel diffusion bonded joint by electrochemical potentiokinetic reactivation
    Corrosion Science, 2011
    Co-Authors: Shuxin Li, Lei Li, Shurong Yu, R Akid
    Abstract:

    Electrochemical potentiokinetic reactivation technique (EPR) was employed to assess degree of sensitization in 316L stainless steel diffusion bonded joint (DBJ). The result showed the degree of sensitization of DBJ was much smaller than that of base material (BM). No chromium carbides precipitated at grain boundaries in DBJ after 100 h treatment at 650 °C, while chromium carbides could be seen clearly in the BM after 8 h treatment, indicating that DBJ has better Intergranular Corrosion resistance than BM. Diffusion bonding technique will not increase Intergranular Corrosion susceptibility of 316L DBJ. Reactivation potential has the biggest effect on sensitization.

Shengyong Gu - One of the best experts on this subject based on the ideXlab platform.

  • microstructure and Intergranular Corrosion behavior of haz in dp tig welded dss joints
    Journal of Materials Processing Technology, 2018
    Co-Authors: Shengyong Gu, Xiaoqin Shen
    Abstract:

    Abstract In this study, 10.8-mm-thick workpieces of S32101 duplex stainless steel were welded using a keyhole deep penetration tungsten inert gas welding system. The misorientation angle distribution of grain boundaries in the heat affected zone was analyzed using the electron backscatter diffraction technique. Double-loop electrochemical potentiokinetic reactivation tests were performed to assess the Intergranular Corrosion resistance, based on the degree of sensitization. The volume fractions of ferrite and austenite and the grain boundary misorientation angle affect the Intergranular Corrosion of the welded joints. The relationship between the grain boundary misorientation angle of the austenite and the degree of sensitization was established. The volume fraction of austenite and the frequency of Σ3 coincidence site lattice boundary, increases with the increasing heat input. The misorientation angle distribution in the austenite, the frequency of Σ3 coincidence site lattice boundary, and the volume fraction of CrN influence the Intergranular Corrosion resistance of the heat affected zone.

Binbin Zhang - One of the best experts on this subject based on the ideXlab platform.

  • detection of susceptibility to Intergranular Corrosion of aged super austenitic stainless steel s32654 by a modified electrochemical potentiokinetic reactivation method
    Journal of Alloys and Compounds, 2017
    Co-Authors: Shucai Zhang, Zhouhua Jiang, Huabing Li, Hao Feng, Binbin Zhang
    Abstract:

    Abstract The double loop electrochemical potentiokinetic reactivation method was modified and applied to detect the susceptibility to Intergranular Corrosion of super austenitic stainless steel S32654 aged at 1000 °C. The precipitation behavior was clarified, and the corresponding Intergranular Corrosion mechanism of aged S32654 was proposed. The microstructure demonstrated that σ phase, Cr2N and π phase nucleated at the initial stages of aging and gradually grew larger with increasing aging time. The degree of sensitization increased rapidly in the early stage of aging and then showed a slow increasing rate during long term aging stage, and no self-healing has been observed. Such modified double loop electrochemical potentiokinetic reactivation method could successfully characterize the relationship between microstructure evolution and Intergranular Corrosion susceptibility of S32654. The mechanism of Intergranular Corrosion was attributed to the Cr and Mo depletion adjacent to σ phase and π phase and the Cr depletion around Cr2N.

V V Fedorishin - One of the best experts on this subject based on the ideXlab platform.