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| 球墨铸铁加热过程中渗碳体石墨化的原位观察 | |
| 引用本文： | 李青春,林大帅,杨晓平,常国威,翟启杰.球墨铸铁加热过程中渗碳体石墨化的原位观察[J].材料热处理学报,2011,32(10). |
| 作者姓名： | 李青春 林大帅 杨晓平 常国威 翟启杰 |
| 作者单位： | 1. 辽宁工业大学材料科学与工程学院,辽宁锦州121001／上海市现代冶金与材料制备重点实验室,上海200072 2. 辽宁工业大学材料科学与工程学院,辽宁锦州,121001 3. 上海市现代冶金与材料制备重点实验室,上海,200072 |
| 基金项目： | 辽宁省教育厅项目(2008T089) |
| 摘 要： | 采用激光共聚焦扫描显微镜直接观察了球墨铸铁在加热过程中渗碳体的分解和石墨形态的演化。结果表明：球墨铸铁在加热过程中渗碳体逐渐溶解,加热速率越快,渗碳体的分解速率越快。加热过程中石墨形态的演变行为与加热速率有关。加热速率较慢,组织中出现了小石墨,原有石墨长大。加热速率较快,渗碳体周围的小石墨逐渐溶解变小。 |
| 关 键 词： | 球墨铸铁 渗碳体 石墨化 原位观察 |
In situ observation of graphitization of cementite in ductile cast iron during heating |
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| LI Qing-chun,LIN Da-shuai,YANG Xiao-ping,CHANG Guo-wei,ZHAI Qi-jie.In situ observation of graphitization of cementite in ductile cast iron during heating[J].Transactions of Materials and Heat Treatment,2011,32(10). | |
| Authors: | LI Qing-chun LIN Da-shuai YANG Xiao-ping CHANG Guo-wei ZHAI Qi-jie |
| Affiliation: | LI Qing-chun1,2,LIN Da-shuai1,YANG Xiao-ping1,CHANG Guo-wei1,ZHAI Qi-jie 2 (1.School of Materials Science and Engineering,Liaoning University of Technology,Jinzhou 121001,China,2.Shanghai Key Laboratory of Modern Metallurgy and Materials Processing,Shanghai University,Shanghai 200072,China) |
| Abstract: | Decomposition of cementite and evolution behavior of graphite shape in ductile cast iron during heating were observed by using a confocal laser scanning microscope.The results show that the cementite dissolves gradually during heating.The quicker the heating rate is,the faster the decomposition rate of the cementite is.The evolution of graphite shape during heating is related to the heating rate.Some small graphite appears in the structure and original graphite grows at lower heating rate.The small graphite... |
| Keywords: | ductile cast iron cementite graphitization in situ observation |
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