铸造技术2023，Vol.44Issue(12)：1124-1129,6.DOI:10.16410/j.issn1000-8365.2023.3263
铁素体对蠕墨铸铁力学性能和导热性的影响
Effects of Ferrite on the Mechanical Properties and Thermal Conductivity of Vermicular Graphite Cast Iron
摘要
Abstract
Vermicular graphite cast iron used in brake discs demands a combination of improved mechanical properties and thermal conductivity to meet the requirements of high thermal fatigue and wear resistance.This study investigates the effects of the content and solution strengthening of ferrite on the tensile strength,Brinell hardness and thermal conductivity of vermicular graphite cast iron by changing the addition of Sn and Mo.The experimental results demonstrate that Sn significantly affects the proportion of pearlite and ferrite and strengthens the matrix of vermicular graphite cast iron.On the other hand,Mo can also strengthen the matrix but has less effect on the ratio of ferrite to pearlite.A contradictory relationship between the effects of ferrite(both its content and solution strengthening)on the mechanical properties and thermal conductivity of vermicular graphite cast iron is found.The results show that the balance of the mechanical and thermal properties of vermicular graphite cast iron can be regulated by increasing and strengthening the ferrite.关键词
蠕墨铸铁/铁素体比例/固溶强化/力学性能/导热系数Key words
vermicular graphite cast iron/ferrite ratio/solution strengthening/mechanical properties/thermal conductivity分类
金属材料引用本文复制引用
徐卓,王桂权,刘仲礼,王明佳,陈祥,马聪,王志钦..铁素体对蠕墨铸铁力学性能和导热性的影响[J].铸造技术,2023,44(12):1124-1129,6.基金项目
山东省自然科学基金面上项目(ZR2022ME211) （ZR2022ME211）
烟台市科技创新发展计划(2023ZDX016) （2023ZDX016）
2023年度山东省重点扶持区域引进急需紧缺人才项目 （）
