摘要
通过铝热反应法分别在铜底材和玻璃底材上制备了亚微米亚共晶铸铁。利用光学显微镜、扫描电镜、X射线衍射仪及电子探针对亚共晶铸铁的组织及成分进行了研究。测试了亚共晶铸铁的硬度、压缩性能和拉伸性能。结果表明:该方法制备的亚共晶铸铁是由渗碳体以及珠光体组成,铜底材和玻璃底材亚共晶铸铁的平均珠光体层间距分别为220nm和165nm。铜底材和玻璃底材亚共晶白口铁的维氏硬度分别为564HV和552HV,抗压强度分别为2429MPa和2224MPa,抗拉强度分别为391MPa和383MPa,伸长率分别为2%和3%。
A white cast iron with submicron microstructure was prepared by an aluminothermic reaction casting on copper substrate and glass substrate. Microstructures and composition of the cast iron were investigated by optical microscope （OM）, scanning electron microscope （SEM）, X-ray diffraction （XRD）, and electron probe micro-analyzer （EPMA）. The hardness, compressive properties and tensile properties of the cast iron were also tested. The results show that the cast iron consists of pearlite and cementite phases. The average lamellar spacing of the pearlite phase on copper substrate and glass suhstrate is 220nm and 165nm respectively. Hardness of the cast iron is 564HV and 552HV, compressive strength is 2429MPa and 2224MPa, tensile strength is 391MPa and 383MPa, total elongation is 2%and 3% respectively.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2014年第10期34-39,共6页
Journal of Materials Engineering
基金
国家自然科学基金资助项目(51104622)
关键词
亚微米晶
亚共晶铸铁
不同底材
力学性能
组织
铝热反应
submicron
hypoeutectic cast iron
different substrate
mechanical property
microstructurealuminothermic reaction
