【摘要】 研究了RE对金属型铸铁件热疲劳性能和抗氧化性能的影响。RE中的Ce和La加入这种低合金铸铁中形成了NiMoRE灰铸铁,并对该铸铁试样在900℃退火和在自制的热疲劳试验机上进行了热疲劳试验。试验结果表明,RE的加入可使NiMo灰铸铁具有较好的高温力学性能,其加入量为0.5%(质量分数)时尤为显著。更多还原

【Abstract】 Effects of rare earth on the heat fatigue resistance and oxidation resistant of cast iron parts in permanent mould were investigated to improve heat fatigue resistance of cast iron tool materials for glass industry. Ni-Mo-Re cast iron is formed in the low alloying cast iron with adding RE containing 0.05%Ce and 0.1% La. Heat fatigue experiment of the samples annealed at 900 ℃ on a self-developed heat fatigue tester indicates that Re elements can obviously improve the mechanical properties at high temperature of Ni-Mo grey cast iron.更多还原