| 氧化铈对低合金钢焊条熔敷金属的影响 |
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| 引用本文： | 郭永环,范希营,高顶.氧化铈对低合金钢焊条熔敷金属的影响[J].机械工程学报,2009,45(4). |
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| 作者姓名： | 郭永环 范希营 高顶 |
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| 作者单位： | 1. 徐州师范大学机电工程学院,徐州,221116
2. 中国矿业大学机电工程学院,徐州,221116 |
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| 基金项目： | 徐州市科技计划资助项目 |
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| 摘 要： | 基于现有焊条性能的特点,针对典型低合金钢焊条(E5515型焊条)当焊接碳当量CE>0.4%的中、高碳钢时,焊接性较差的问题,在新型低合金钢焊条药皮配方开发研制中采取药皮过渡微量的稀土氧化物.通过冲击韧度、拉伸、硬度和金相等试验研究氧化铈对低合金钢焊条熔敷金属力学性能影响和组织的影响,利用扫描电子显微镜对显微组织进行观察分析,用X射线能谱仪进行能谱分析.分析研究结果表明,加入适量的稀土氧化物能够细化熔敷金属显微组织,提高熔敷金属的冲击韧度:稀土能降低熔敷金属中的氢,从而显著降低钢的脆性转变温度.当氧化铈加入量最佳时,熔敷金属的抗拉强度提高了43.27%,屈服强度提高了52.11%,冲击韧度提高了26.49%,而硬度却不下降.
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| 关 键 词： | 氧化铈 低合金钢焊条 熔敷金属 组织 力学性能 |
Cerium Oxide Influence upon Low Alloy Steel Electrode Deposited Metal |
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| GUO Yonghuan,FAN Xiying,GAO Ding.Cerium Oxide Influence upon Low Alloy Steel Electrode Deposited Metal[J].Chinese Journal of Mechanical Engineering,2009,45(4). |
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| Authors: | GUO Yonghuan FAN Xiying GAO Ding |
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| Affiliation: | 1.College of Mechanical and Electrical Engineering;Xuzhou Normal University;Xuzhou 221116;2.College of Mechanical and Electrical Engineering;China University of Mining and Technology;Xuzhou 221116 |
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| Abstract: | Based on the characteristics of existing electrode performance, in view of the poor weld ability of typical low alloy steel electrode(E5515) when it is used to weld CE>0.4% medium high carbon-steel, micro-amount rare earth oxide is transferred through the electrode coating in the development of formula for the new type low alloy steel electrode.Through impact toughness, tension, hardness and metallographic tests, etc., the influence of the cerium oxide on mechanical properties and microstructure of the depo... |
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| Keywords: | Cerium oxide Low alloy steel electrode Deposited metal Microstructure Mechanical properties |
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