Linking anisotropy with Fe3C distribution in AISI 1045 steel
来源期刊：International Journal of Minerals Metallurgy and Materials2015年第12期
论文作者：Ke-chang Shen Gui-hua Li Yi-min Sun Yong-gang Wang Ying-jie Li Guang-hui Cao Wei-min Wang
文章页码：1293 - 1303
摘 要：The anisotropy of the microstructure, thermal expansion behavior, corrosion resistance and magnetic properties of AISI 1045 steel was investigated. The distribution of Fe3 C lamellae i n the investigation plane parallel to the radial directions of molds was observed to differ from that in the investigation plane perpendicular to the radial directions by transmission electron microscopy. The lattice constants a0 of α-Fe deduced from the XRD patterns of samples prepared using a sand（S）-mold and cut parallel to the radial direction of the mold（S∥） and using a metal（M）-mold and cut parallel to the radial direction（M∥）, the corrosion resistance measured using an electrochemical workstation, and the magnetic permeability obtained by vibrating sample magnetometry also indicated the existence of anisotropy in the tested samples. The anisotropic change of corrosion potential（Ecorr）, pitting potential（Epit） and magnetic permeability（μ） of the samples was observed to depend on the orientation factor F200 of α-Fe in the measured samples, which is controlled by the distribution of Fe3 C lamellae in the eutectoid structure.
Ke-chang Shen1，Gui-hua Li2，Yi-min Sun1，Yong-gang Wang1，Ying-jie Li1，Guang-hui Cao3，Wei-min Wang1
1. Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University2. Shandong Institute of Metrology3. School of Materials Science and Engineering, Shanghai University
摘 要：The anisotropy of the microstructure, thermal expansion behavior, corrosion resistance and magnetic properties of AISI 1045 steel was investigated. The distribution of Fe3 C lamellae i n the investigation plane parallel to the radial directions of molds was observed to differ from that in the investigation plane perpendicular to the radial directions by transmission electron microscopy. The lattice constants a0 of α-Fe deduced from the XRD patterns of samples prepared using a sand（S）-mold and cut parallel to the radial direction of the mold（S∥） and using a metal（M）-mold and cut parallel to the radial direction（M∥）, the corrosion resistance measured using an electrochemical workstation, and the magnetic permeability obtained by vibrating sample magnetometry also indicated the existence of anisotropy in the tested samples. The anisotropic change of corrosion potential（Ecorr）, pitting potential（Epit） and magnetic permeability（μ） of the samples was observed to depend on the orientation factor F200 of α-Fe in the measured samples, which is controlled by the distribution of Fe3 C lamellae in the eutectoid structure.
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