改性超细SiC粉体对球墨铸铁低温韧性的影响
发布时间：2019-04-26 05:50
【摘要】：低温高韧性球墨铸铁力学性能优良,在工业上应用广泛,风力发电等领域的未来趋势对其提出了更高要求。通过向铸态球墨铸铁中添加改性超细SiC粉体研究其低温韧性。结果表明:随着改性超细SiC粉体的加入,铸态球墨铸铁中的石墨球细化,球化率提高;组织分布均匀,铁素体含量增加;在常温、-20℃和-40℃下试样的冲击功分别提高19.56%、5.37%、6.15%。
[Abstract]:Low-temperature and high-toughness ductile iron has excellent mechanical properties and is widely used in industry. The future trend of wind power generation puts forward higher requirements for it. The low-temperature toughness of as-cast ductile iron was studied by adding modified ultra-fine SiC powder. The results show that with the addition of modified ultra-fine SiC powder, the graphite ball in as-cast nodular cast iron is refined and the spheroidization rate is increased, the microstructure distribution is uniform and the ferrite content is increased. The impact energy of the samples at room temperature,-20 鈩，
本文编号：2465812
[Abstract]:Low-temperature and high-toughness ductile iron has excellent mechanical properties and is widely used in industry. The future trend of wind power generation puts forward higher requirements for it. The low-temperature toughness of as-cast ductile iron was studied by adding modified ultra-fine SiC powder. The results show that with the addition of modified ultra-fine SiC powder, the graphite ball in as-cast nodular cast iron is refined and the spheroidization rate is increased, the microstructure distribution is uniform and the ferrite content is increased. The impact energy of the samples at room temperature,-20 鈩，
本文编号：2465812
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