中文摘要：

微观结构，热扩大行为，腐蚀抵抗和 AISI 1045 钢的磁性的 anisotropy 被调查。Fe ₃ 在到模子的光线的方向的调查飞机平行的 C lamellae 被观察由传播在对光线的方向垂直的调查飞机不同于那电子显微镜学。从样品的 XRD 模式推出的 -Fe 的₀准备了使用沙(S)的格子常数塑造并且切平行到模子(S//)并且用一个金属(M)模子和切割平行的光线的方向到光线的方向(M//)，用一个电气化学的工作站测量的腐蚀抵抗，和颤动获得的磁性的渗透取样也显示的 magnetometry 在测试样品的 anisotropy 的存在。腐蚀潜力的各向异性的变化(E _corr ), pitting 潜力(E _坑 ) 和磁性的渗透(????? ︿ ? 韮 ??? 曍 ??????? ???????? 観綔憰 ???鞬

英文摘要：

The anisotropy of the microstructure, thermal expansion behavior, corrosion resistance and magnetic properties of AISI 1045 steel was investigated. The distribution of Fe3C lameUae in 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 work- station, 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 （Eeorr）, pitting potential （Epit） and magnetic permeability （μ） of the samples was observed to depend on the orientation factorF200 of α-Fe in the measured samples, which is controlled by the distribution of Fe3C lamellae in the eutectoid structure.