| Q450NQR1高强度耐候钢连铸板坯的高温性能 |
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| 引用本文： | 黎建全,杨素波,高兴健,陈登福,宋立伟,毕艳艳.Q450NQR1高强度耐候钢连铸板坯的高温性能[J].特殊钢,2010,31(3):54-56. |
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| 作者姓名： | 黎建全 杨素波 高兴健 陈登福 宋立伟 毕艳艳 |
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| 作者单位： | 1攀枝花钢钥有限公司，攀枝花617067；
2重庆大学材料科学与工程学院，重庆400030 |
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| 基金项目： | 国家自然科学基金资助，2009 年高等学校博士学科点专项科研基金资助 |
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| 摘 要： | 采用DIL402C热膨胀仪和Gleeble-1500D热模拟试验机,测试了Q450NQR1钢(%:0.05～0.10C、0.30～0.50Si、0.80～1.00Mn、0.20～0.30Cu、0.15～0.35Ni、0.40～0.60Cr)200 mm×1 350 mm铸坯的热膨胀性能和高温力学性能。结果表明,升-降温速率由5℃/min提高至10℃/min时,升温相变温度区间上移,降温相变区间下移;Q450NQR1钢连铸坯二次脆性区为750～1 050℃,铸坯的矫直温度应≥1 050℃。
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| 关 键 词： | Q450NQR1 高强度耐候钢 热膨胀性能 热塑性 |
| 收稿时间： | 2009-11-03 |
Elevated Temperature Performance of Casting Slab of High Strength Weather-Resisting Steel Q450NQR1 |
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| Li Jianquan,Yang Subo,Gao Xingjian,Chen Dengfu,Song Liwei,Bi Yanyan.Elevated Temperature Performance of Casting Slab of High Strength Weather-Resisting Steel Q450NQR1[J].Special Steel,2010,31(3):54-56. |
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| Authors: | Li Jianquan Yang Subo Gao Xingjian Chen Dengfu Song Liwei Bi Yanyan |
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| Affiliation: | 1 Steel and Vanadium Co Ltd, Pansteel Group, Panzhihua 617067 ；
2 College of Materials Science and Engineering, Chongqing University, Chongqing 400030 |
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| Abstract: | Thermal expansion characteristics and elevated temperature mechanical properties of 200 mm x 1 350 mm casting slab of steel Q450NQR1 (% ： 0. 05 ~0. 10C, 0. 30 ~0. 50Si, 0. 80 ~ 1. 00Mn, 0. 20 ~0. 30Cu, 0. 15 ~0. 35Ni, 0. 40 - 0. 60Cr) have been examined by using thermal expansion tester DIL402C and thermal simulater Gleeble-1500D. Results show that with increasing heating and cooling rate from 5 ℃/min to 10 ℃/min, the heating phase transformation region moves up and the cooling phase transformation region moves down； the secondary brittleness zone of casting slab of steel Q450NQR1 is 750 ~ 1 050 ℃,therefore the straightening temperature of slab should be ≥1 050 ℃. |
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| Keywords: | High Strength Weather-Resisting Steel Q450NQR1 Thermal Expansion Characteristic Thermoplasticity |
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