| 显微组织对无限冷硬铸铁轧辊热疲劳性能的影响 |
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| 引用本文： | 丁峰,张焱,叶劲,刘宝,尤显卿.显微组织对无限冷硬铸铁轧辊热疲劳性能的影响[J].合肥工业大学学报(自然科学版),2009,32(5). |
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| 作者姓名： | 丁峰 张焱 叶劲 刘宝 尤显卿 |
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| 作者单位： | 1. 安徽职业技术学院,机械系,安徽,合肥,230001
2. 合肥工业大学,材料科学与工程学院,安徽,合肥,230009 |
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| 基金项目： | 安徽高校省级自然科学研究计划，安徽职业技术学院重点科研资助项目 |
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| 摘 要： | 文章介绍在无限冷硬铸铁轧辊上切取板状热疲劳试样,在自制的热疲劳试验机上进行了冷热循环实验,研究了显微组织对无限冷硬铸铁热疲劳裂纹萌生及扩展的影响.结果表明,热疲劳裂纹在石墨尖端处、珠光体基体及共晶碳化物中萌生;热疲劳裂纹主要在钢基体与共晶莱氏体界面处、钢基体内扩展及穿越共晶碳化物.
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| 关 键 词： | 无限冷硬铸铁轧辊 显微组织 热疲劳 裂纹 |
Effect of microstructure on thermal fatigue properties of infinite chilled cast iron roll materials |
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| DING Feng,ZHANG Yan,YE Jing,LIU Bao,YOU Xian-qing.Effect of microstructure on thermal fatigue properties of infinite chilled cast iron roll materials[J].Journal of Hefei University of Technology(Natural Science),2009,32(5). |
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| Authors: | DING Feng ZHANG Yan YE Jing LIU Bao YOU Xian-qing |
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| Institution: | 1.Dept.of Mechanical Engineering;Anhui Vocational and Technical College;Hefei 230001;China;2.School of Material Science and Engineering;Hefei University of Technology;Hefei 230009;China |
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| Abstract: | This paper introduces the thermal cycle test which has been made on plate specimens cut from the infinite chilled cast iron roller by using the self-made thermal fatigue test machine.The effect of microstructure on the initiation and propagation of the cracks due to thermal fatigue in infinite chilled cast iron roll materials is studied.The results show that thermal fatigue cracks initiate at graphite cusps and in the pearlitic matrix and eutectic carbide.The cracks mainly propagate at interfaces between th... |
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| Keywords: | infinite chilled cast iron roll microstructure thermal fatigue crack |
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