摘要
采用光学显微镜、扫描电镜及能谱仪等方法研究了钙处理后18CrNiMo7-6齿轮钢中钙硫比对硫化物热变形性能的影响。结果表明:钙硫比在0.019～0.068范围内时,钢中的硫化物主要由单相硫化物和氧硫复合夹杂物组成,复合夹杂物的含量与钙硫比存在正比线性关系;整体硫化物的相对塑性与钙硫比呈线性递减关系,钙硫比主要通过影响氧硫复合夹杂物的相对比例和成分来影响整体硫化物的相对塑性。
The effect of ratio of calcium to sulfur on hot deformability of sulfides in the gear steel 18CrNiMo7-6 after calcium-treatment was investigated by means of optical microscope,scanning electron microscope and electron spectrometer.The results show that the sulfides were composed of single phase sulfide and oxide-sulfide duplex inclusions in steels when the ratio was between 0.019 and 0.068.The content of the compound inclusions correlated proportionally with the ratio of the steel,and the relative plasticity of all sulfides decreased linearly with the ratio.The relative fraction and composition of oxide-sulfide compound inclusions which were influenced by the ratio played a major role in relative plasticity for all sulfides.
出处
《机械工程材料》
CAS
CSCD
北大核心
2010年第11期14-17,共4页
Materials For Mechanical Engineering
关键词
齿轮钢
钙处理
硫化物
相对塑性
gear steel
calcium-treatment
sulfide
relative plasticity
