Effects of processing optimisation on microstructure, texture, grain boundary and mechanical properties of Fe-17Cr ferritic stainless steel thick plates

Authors

Jian Han, University of WollongongFollow
Huijun Li, University of WollongongFollow
Zhixiong Zhu, University of WollongongFollow
Laizhu Jiang, Baoshan Iron and Steel
Haigang Xu, Baoshan Iron and Steel
Li Ma, Baoshan Iron and SteelFollow

RIS ID

93123

Publication Details

Han, J., Li, H., Zhu, Z., Jiang, L., Xu, H. & Ma, L. (2014). Effects of processing optimisation on microstructure, texture, grain boundary and mechanical properties of Fe-17Cr ferritic stainless steel thick plates. Materials Science and Engineering A: Structural Materials: Properties, Microstructure and Processing, 616 20-28.

Abstract

The relationships between microstructure, texture, grain boundary and tensile strength, Charpy impact toughness of (Nb+Ti+V) stabilised Fe-17Cr ferritic stainless steel thick plates were investigated by means of optical microscopy, X-ray diffraction, scanning electron microscopy, electron backscatter diffraction, tensile and Charpy impact testing. The results show that for Fe-17Cr ferritic stainless steel thick plate, the addition of warm rolling procedure leads to refinement of grain size, modification of texture, and then optimisation of grain boundary, including grain boundary character distribution and grain boundary connectivity. Meanwhile, the mechanical testing results indicate that optimal transformation that warm rolling procedure brings to Fe-17Cr ferritic steel thick plate is beneficial to its mechanical properties.