摘要
通过JMatPro计算,研究了真空浇注条件下,C、Si、Mn、Cr、Ni和Mo等6种合金元素对核电用钢SA508III铸造性能的影响。利用正交试验原理设计了6因素3水平共150组试验,通过方差分析和线性回归等手段,确定了与铸造性能相关的两个目标函数的回归方程。计算结果表明,正交试验设计可以用于SA508III钢的合金成分优化;降低合金中C和Si的含量,有利于改善SA508III合金的铸造性能,减小合金在凝固过程中产生热裂和缩孔、缩松的倾向。
Effects of alloy elements including C, Si, Mn, Cr, Ni, and Mo, on the casting properties of SAS08Ⅲ steel were investigated by the JMatPro calculation. Variance analysis and linear regression were used to evaluate the regression equations for two objective functions by 6 factors, 3 levels with a total of 150 groups, which was related to casting properties of steels. The results show that the orthog- onal experiment is an effective way to optimize the composition of SA508III steel. It is demonstrated by calculation that the casting properties of SAS08III steel can be improved by decreasing the content of C and Si, and the casting defects such as hot tears and shrinkage porosity can be reduced.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2014年第4期350-353,共4页
Special Casting & Nonferrous Alloys
