论文部分内容阅读
应用光学显微镜和扫描电镜分析研究了球铁中“黑斑”区的组织。结果表明,“球墨破碎论”难于成立。提出了新的关于黑斑形成的机理。
The microstructure of “dark spots” in ductile iron was studied by optical microscopy and scanning electron microscopy. The result shows that it is hard to set up the theory of “broken ball and ink”. Proposed a new mechanism for the formation of dark spots.