| 冷却速度对高铬铸铁凝固组织及耐磨性的影响 |
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| 引用本文： | 黄鹏,纪秀林,吴怀超,单益平,王鲲鹏.冷却速度对高铬铸铁凝固组织及耐磨性的影响[J].铸造,2019(8):854-859. |
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| 作者姓名： | 黄鹏 纪秀林 吴怀超 单益平 王鲲鹏 |
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| 作者单位： | 贵州大学;河海大学;清华大学摩擦学国家重点实验室 |
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| 基金项目： | 贵州省高层次创新型人才培养计划项目(黔科合平台人才(2016)5659);贵州省留学人员科技活动项目择优资助重点项目(黔人项目资助合同(2018)0001号);贵州省科技计划项目(黔科合平台人才[2017]5788号) |
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| 摘 要： | 研究了高铬铸铁在凝固过程中冷却速度对微观组织及耐磨性的影响。结果显示,高铬铸铁在凝固过程中,快的冷却速度使碳化物硬质相的硬度降低,韧性提高;冲蚀磨损的作用下,不易脱落和脆性断裂,因而对基体有较好的保护作用,使得单位面积上体积损失率变小。高铬铸铁在凝固过程中的冷却速度越快,其抗冲蚀磨损的能力就越强。
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| 关 键 词： | 高铬铸铁 金相组织 凝固速度 冲蚀磨损 |
Effects of Cooling Rate on Solidification Structure and Wear Resistance of High Chromium Cast Iron |
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| HUANG Peng,Jl Xiu-lin,WU Huai-chao,SHAN Yi-ping,WANG Kun-peng.Effects of Cooling Rate on Solidification Structure and Wear Resistance of High Chromium Cast Iron[J].Foundry,2019(8):854-859. |
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| Authors: | HUANG Peng Jl Xiu-lin WU Huai-chao SHAN Yi-ping WANG Kun-peng |
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| Affiliation: | (Guizhou University, Guiyang 550025, Guizhou, China;Hohai University, Changzhou 213022, Jiangsu, China;State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China) |
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| Abstract: | The effects of cooling rate on the microstructure and wear resistance of high chromium cast iron during solidification were studied. The results show that, the faster cooling rate makes the hardness of hard phase carbides in high chromium cast iron decrease, the toughness increase, therefore, brittle fracture is not easy to occur under the action of erosion wear, as they have a better the protection action on matrix, so the volume loss rate per unit area is reduced. That is, the faster the cooling rate, the higher the anti-erosion wear ability of chromium cast iron. |
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| Keywords: | high chromium cast iron metallographic structure solidification rate erosion wear |
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