| The Microstructure and Mechanical Properties of the Low Carbon Microalloy Steel by High Voltage Electropulse Heating |
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| 作者姓名： | FANXin-min HuiJing Yinsheng |
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| 作者单位： | DepartmentofMaterialsScienceandEngineering,NanfingUniversityofScienceandTechnology,Nanjing,China |
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| 摘 要： | The low carbon microalloy steel samples were heated to different temperatures by high voltage electropulse discharge heating method. The temperature of sample increases with the discharge current density. Microstructures were observed by using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Results show that coexist microstructure of ultrafine ferrite grain and martensite can be obtained by proper high voltage electropulse discharge heating process parameter. The tensile testing indicate that better mechanical properties were obtained, including 758MPa yield strength, 796MPa ultimate strength and 12% total elongation.
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| 关 键 词： | 显微结构 机械性质 晶粒细化 低碳微量合金 高压电脉冲加热 |
The Microstructure and Mechanical Properties of the Low Carbon Microalloy Steel by High Voltage Electropulse Heating |
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| FANXin-min HuiJing Yinsheng.The Microstructure and Mechanical Properties of the Low Carbon Microalloy Steel by High Voltage Electropulse Heating[J].Transactions of Materials and Heat Treatment,2004,25(5):635-637. |
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| Authors: | FAN Xin-min HUI Jing Yin sheng |
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| Affiliation: | Department of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, China |
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| Abstract: | The low carbon microalloy steel samples were heated to different temperatures by high voltage electropulse discharge heating method. The temperature of sample increases with the discharge current density. Microstructures were observed by using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Results show that coexist microstructure of ultrafine ferrite grain and martensite can be obtained by proper high voltage electropulse discharge heating process parameter. The tensile testing indicate that better mechanical properties were obtained, including 758MPa yield strength, 796MPa ultimate strength and 12% total elongation. |
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| Keywords: | mechanical properties microstructure grain refinement high voltage electropulse discharge heating |
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