| 500 MPa级门架型钢的奥氏体晶粒长大行为 |
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| 引用本文： | 高彩茹,霍喜伟,宋玉卿,杜林秀,乔鹏,屈兵兵.500 MPa级门架型钢的奥氏体晶粒长大行为[J].金属热处理,2020,45(1):139-142. |
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| 作者姓名： | 高彩茹 霍喜伟 宋玉卿 杜林秀 乔鹏 屈兵兵 |
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| 作者单位： | 1. 东北大学 轧制技术及连轧自动化国家重点实验室, 辽宁 沈阳 110819;2. 山东钢铁股份有限公司莱芜分公司, 山东 莱芜 271104 |
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| 基金项目： | 国家高技术研究发展计划（863计划） |
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| 摘 要： | 为探究加热温度和保温时间对500 MPa级门架型钢奥氏体晶粒尺寸的影响,以两种不同成分试验钢为研究对象,采用了SK型管式加热炉分别将试验钢加热到1000~1200 ℃下保温15、30 min,快速冷却后对组织进行观察。结果表明,奥氏体晶粒尺寸随着加热温度的升高和保温时间的延长而长大,Cr元素的添加对奥氏体晶粒的长大具有一定的抑制作用,研究结果对制定大生产加热具有实际指导作用。
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| 关 键 词： | 门架型钢 加热温度 保温时间 Cr元素 奥氏体晶粒 |
| 收稿时间： | 2019-06-22 |
Austenite grain growth behavior of 500 MPa grade gantry steel |
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| Gao Cairu,Huo Xiwei,Song Yuqing,Du Linxiu,Qiao Peng,Qu Bingbing.Austenite grain growth behavior of 500 MPa grade gantry steel[J].Heat Treatment of Metals,2020,45(1):139-142. |
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| Authors: | Gao Cairu Huo Xiwei Song Yuqing Du Linxiu Qiao Peng Qu Bingbing |
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| Affiliation: | 1. State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang Liaoning 11089, China;2. Laiwu Branch of Shandong Iron and Steel Ltd., Laiwu Shandong 271104, China |
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| Abstract: | In order to study the effect of heating temperature and holding time on the austenite grain size of 500 MPa grade gantry steel,two kinds of tested steels with different compositions were studied. The SK type tubular heating furnace was used to heat the tested steels to 1000-1200 ℃ for 15 min and 30 min respectively. The microstructure was observed after rapid cooling from high temperature and the grain size was determined. The results show that the austenite grain size increases with the increase of heating temperature and holding time,the addition of Cr has a certain inhibitory effect on the growth of austenite grains. The research results have a practical guidance for the development of actual production heating process. |
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| Keywords: | gantry steel heating temperature holding time Cr element austenite grain |
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