【摘要】 本文利用ASM—SX型扫描电镜对厚大断面球铁核容器拉伸试样的断口进行观察分析后,认为温度、石墨形态、石墨大小和晶界偏析组织影响显微断口的形态;而不同的显微断口形态与不同断面的机械性能存在着一定的时应关系。更多还原

【Abstract】 After the author has observed and analysed the test sample fracture of the heavy section ductile castiron cask by scanning electron microsco -pe of ASM桽X model, he thinks that there are certain corresponding relations between the mechanial properties of various sections and different micro-fractures that are resulted from graphite form, grain-boundary segregation structure and temperature.更多还原