摘要
This thesis determinates the microstructure and inclusions of the alloyed tool steel by CSP processing with the help of SEM.The results show that the slab microstructures are the fine branched crystalline grains and the branch width has little disparity from the surface to the central region.For the product,the grain microstructures are fine pearlites and few ferrites with the pearlite space 0.4μm to 0.2μm.
This thesis determinates the microstructure and inclusions of the alloyed tool steel by CSP processing with the help of SEM.The results show that the slab microstructures are the fine branched crystalline grains and the branch width has little disparity from the surface to the central region.For the product,the grain microstructures are fine pearlites and few ferrites with the pearlite space 0.4μm to 0.2μm.
