【摘要】 熔液自旋含钛奥氏体不锈钢 316L 薄带具有典型的快速凝固结构和均匀的化学成分。显微结构由细小柱晶和等轴晶构成。测得晶胞间距约0.2μm。算得其平均冷却速度为10~6 °C/S。结构中有一无特征区域,说明凝固时的过冷度较高,算得其形核过冷度约200K。更多还原

【Abstract】 Melt-spun Ti-modified 316L stainless steel ribbon exhibits a ty- pical rapid solidification microstructure and homogenious chemical composition. The microstructure consists of fine-scale columnar and equiaxed grains.The cell spacing measured is about 0.2 μm The average cooling rate calculated is 10~6℃/s. A region of featureless microstructure exists,indicating a high undercooling during solidification.The nucleation undercooling calculated is about 200 K.更多还原