回火温度对含 δ 铁素体高铝中锰钢力学性能和显微组织的影响

沈国慧, 胡斌, 杨占兵, 罗海文

Influence of Tempering Temperature on Mechanical Properties and Microstructures of High-Al-Contained Medium Mn Steel Having δ-Ferrite

SHEN Guohui, HU Bin, YANG Zhanbing, LUO Haiwen

图4 T600样品拉断后宏观形貌及其中裂纹扩展的SEM像和TEM像及EDS (a) fractured specimen (b) fracture SEM images after tensile test (PAGB—prior austenite grain boundary) (c, d) cracks propagation along the rolling direction (e-g) magnification views of areas marked by A, B, and C in Figs.4c and d, respectively (h) EDS on the cementite from the particle marked by white arrow in Fig.4e (i) TEM image exhibiting the distribution of cementite and VC inner martensite lath (j) EDS on the VC from the particle marked by white arrow in Fig.6i

Fig.4 Macrostructure of fractured specimen, SEM and TEM images of the fracture morphology and crack propagation, and corresponding EDS for T600 specimen