论文部分内容阅读
本论文研究了D型石墨对灰铸铁抗拉强度的影响;获得了(D-G_r)%—σ_b的关系曲线;讨论了D型石墨铸铁的强化机理。试验结果表明,D型石墨铸铁具有比A型石墨铸铁更高的强度;Al、Ti以适当的比例配合加入D型石墨铸铁的抗拉强度随Si/C的增加可从50kg/mm~2增加到64kg/mm~2。
In this dissertation, the effect of D-type graphite on the tensile strength of gray cast iron was studied. The relationship curve of (D-G_r)% - σ_b was obtained. The strengthening mechanism of D-type graphite cast iron was also discussed. The results show that D-type graphite cast iron has a higher strength than A-type graphite cast iron. The tensile strength of D-type graphite cast iron with appropriate proportion of Al and Ti increases from 50kg / mm ~ 2 with the increase of Si / C To 64kg / mm ~ 2.