摘要
采用图像分析技术,通过分析亚共晶Al-Si合金共晶硅相几何参数与变质级别的关系,建立了变质级别的量化指标,实现了亚共晶Al—Si合金变质级别的定量金相分析.分析表明,共晶硅相的形状因子反映了AFS变质级别的变化趋势.综合考虑共晶硅相形状及大小给出的面积加权形状因子与变质级别之间有很好的对应关系,可用来准确表征亚共晶Al—Si合金的变质级别.
A quantization index of silicon modification level （ML） of hypoeutectic aluminum-silicon alloys was established by setting up the relationship between the geometry parameters of eutectic silicon phase and silicon ML using image analysis technology, and the quantitative metallographic analysis of the aluminum silicon alloy ML was attained in this paper. The analysis results have shown that the average shape factor of eutectic silicon phase provides a correct ML trend. The median value of average area weighted shape factor that had comprehensively considered the form and size of eutectic silicon particles has excellent correspondence with the ML, and can be utilized for evaluating the modification level.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
2005年第8期891-896,共6页
Acta Metallurgica Sinica
关键词
Al-Si合
变质
变质级别评定
定量金相
Al-Si alloy, modification, modification evaluation,quantitative metallography
