| 堆垛缓冷对Q550D-Z钢板组织性能的影响 |
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| 引用本文： | 刘海波.堆垛缓冷对Q550D-Z钢板组织性能的影响[J].中国冶金,2014,24(3):31-33. |
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| 作者姓名： | 刘海波 |
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| 作者单位： | 济钢集团有限公司宽厚板厂， 山东 济南 250101 |
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| 摘 要： | 利用超低碳和微合金化的成分设计，采用TMCP工艺，充分利用晶粒细化和针状铁素体与粒状贝氏体组织强化、下线堆垛缓冷24h等手段，保证热轧状态达到该钢种需要的屈服强度、伸长率，进而去掉热处理调质及回火工艺，同样在工业试制条件下得到韧性良好、屈服强度为570 MPa级的超低碳贝氏体钢。
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| 关 键 词： | 关键词：Q550D-Z 贝氏体 TMCP工艺 针状铁素体 |
Effects of Stacking Slow Cooling on Organizational Performance of Q550D-Z Steel |
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| LIU Hai-bo.Effects of Stacking Slow Cooling on Organizational Performance of Q550D-Z Steel[J].China Metallurgy,2014,24(3):31-33. |
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| Authors: | LIU Hai-bo |
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| Affiliation: | （Heavy Plate Plant，Jinan Iron and Steel Group Co．， Ltd．， Jinan 250101， Shandong， China） |
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| Abstract: | The hot-rolled plate met the requirememt of yield strength and elongation by ultra-low carbon,micro-alloying, TMCP (Thermomechanical Controlled Proces), and offline stackingslow cooling of 24 hours without quenching and tempering, making full use of grain refinement and acicular ferrite and granular bainite strengthening. The ultralow-carbon bainitic steel with good toughness and yield strength of 570MPa grade was produced under the same conditions in the industrial production. |
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| Keywords: | Key words: Q550D-Z Bainite TMCP process Acicular ferrite |
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