| 回火温度对高速重载列车车轴用钢EA4T冲击韧度的影响 |
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| 引用本文： | 康利梅,雷旻,邹静,梁益龙. 回火温度对高速重载列车车轴用钢EA4T冲击韧度的影响[J]. 铸造技术, 2012, 33(3): 302-303 |
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| 作者姓名： | 康利梅 雷旻 邹静 梁益龙 |
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| 作者单位： | 1. 贵州大学材料与冶金学院,贵州贵阳,550003
2. 贵州大学材料与冶金学院,贵州贵阳550003;贵州省材料结构与强度重点实验室,贵州贵阳550003 |
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| 基金项目： | 科技部《科技人员服务企业行动项目》资助项目(2009GJF20026) |
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| 摘 要： | 将经过不同温度回火后的EA4T钢试样分别加工成夏比V型和U型缺口冲击试样,通过系列冲击试验对EA4T钢的回火脆性进行了研究.结果表明,EA4T钢冲击韧度随回火温度的升高而升高,在550℃左右回火具有高温回火脆性,在高于回火脆性温度区回火时,其冲击韧度将大幅度提高.回火脆性对夏比V尖锐缺口的敏感性更高.
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| 关 键 词： | EA4T钢 回火脆性 冲击韧度 |
Influence of Tempering Temperature on Impact Toughness of Axle Steel EA4T in High-speed Overloaded Trains |
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| KANG Li-Mei , LEI Min , ZOU Jing , LIANG Yi-Long. Influence of Tempering Temperature on Impact Toughness of Axle Steel EA4T in High-speed Overloaded Trains[J]. Foundry Technology, 2012, 33(3): 302-303 |
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| Authors: | KANG Li-Mei LEI Min ZOU Jing LIANG Yi-Long |
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| Affiliation: | 1,2(1.Department of Materials and Metallurgy,Guizhou University,Guiyang 550003,China;2.Guizhou Key Laboratory for Structure and Strength of Materials,Guiyang 550003,China) |
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| Abstract: | Preparing Charpy V and U type impact samples of steel EA4T tempered at different temperature,respectively,the temper brittleness of steel EA4T was researched by a series of impact test on above samples.The results show that,with the increase of tempering temperature,impact toughness of steel EA4T rises,and there is high-temperature tempering brittleness at about 550 ℃.When the tempering temperature is higher than the region of temperature,the impact toughness value will improve greatly.Also found Charpy V type samples have higher sensitivity than U type impact samples for tempering brittleness. |
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| Keywords: | steel EA4T tempering brittleness impact toughness |
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