| 高碳钢连铸板坯高温力学性能 |
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| 引用本文： | 王新华,朱国森,于会香,王万军.高碳钢连铸板坯高温力学性能[J].北京科技大学学报,2005,27(5):545-548. |
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| 作者姓名： | 王新华 朱国森 于会香 王万军 |
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| 作者单位： | [1]北京科技大学冶金与生态工程学院,北京100083 [2]首钢技术研究院,北京100041 |
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| 摘 要： | 采用Gleeble-1500热模拟试验机测量了高碳钢连铸板坯的高温力学性能,得到了第Ⅰ、第Ⅲ脆性温度区的温度范围.结果表明:第Ⅰ脆性温度区脆化的主要原因是晶界部位的低熔点物质在高温下首先熔化,从而导致试样沿晶界开裂;第Ⅲ脆性温度区脆化的主要原因是在奥氏体部位析出的网状铁素体导致试样沿晶界开裂;在奥氏体单相区,由于氮化铝的析出导致钢种的塑性恶化.
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| 关 键 词： | 氮化铝 高温力学性能 高碳钢 连铸板坯 高碳钢 连铸板坯 高温 力学性能 high carbon steels continuous casting properties temperature 塑性 氮化铝 单相 奥氏体 网状铁素体 体部 晶界开裂 试样 熔化 低熔点物质 脆化 结果 |
| 收稿时间： | 2004-08-25 |
| 修稿时间： | 2004-10-18 |
High temperature properties of continuous casting high carbon steels |
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| WANG Xinhua, ZHU Guosen, YU Huixiang, WANG Wanjun.High temperature properties of continuous casting high carbon steels[J].Journal of University of Science and Technology Beijing,2005,27(5):545-548. |
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| Authors: | WANG Xinhua ZHU Guosen YU Huixiang WANG Wanjun |
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| Institution: | 1. Metallurgical and Ecological Engineering School, University of Science and Technology Beijing, Beijing 100083, China; 2. Shougang Research Institute of Technology, Beijing 100041, China |
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| Abstract: | High temperature properties of continuous casting high carbon steels were measured by tensile tests with a Gleeble 1500 system and two embrittlement temperature regions of region I and region III were found. The results indicated that the cause of embrittlement in region I was the existence of liquid film along dendritic interfaces, and the embrittlement in region III was caused by precipitation of proeutectoid ferrite film along austenite grain boundary. AlN precipitation at the full austenite grain boundary would worsen the ductility of the steels. |
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| Keywords: | aluminium nitride high temperature properties high carbon steel continuously cast slab |
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