| 薄规格12MnNiVR储罐钢低屈强比控制策略 |
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| 引用本文： | 张跃飞,王坤,张学峰,邹扬,杜群超.薄规格12MnNiVR储罐钢低屈强比控制策略[J].金属热处理,2022,47(6):173-177. |
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| 作者姓名： | 张跃飞 王坤 张学峰 邹扬 杜群超 |
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| 作者单位： | 1.首钢京唐钢铁联合有限责任公司, 河北 唐山 063200;2.首钢集团有限公司 技术研究院, 北京 100043 |
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| 摘 要： | 利用力学性能测试、光学显微镜、扫描电镜观察等方法分析了不同规格调质态12MnNiVR储罐钢显微组织对屈强比的影响。试验结果表明,12MnNiVR钢板淬火后主要组织为马氏体+部分针状铁素体/贝氏体铁素体,18 mm薄规格钢板的针状铁素体体积分数在10%~15%,而33.5 mm厚规格钢板的针状铁素体体积分数可以达到40%以上。通过优化薄规格钢板淬火冷速、淬火温度、回火温度等工艺参数,提高薄规格钢板针状铁素体体积分数,能够降低薄规格钢板屈强比。
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| 关 键 词： | 12MnNiVR钢板 薄规格 屈强比 淬火 回火 针状铁素体 |
| 收稿时间： | 2022-01-21 |
Low yield ratio control strategy for thin 12MnNiVR storage tank steel plate |
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| Zhang Yuefei,Wang Kun,Zhang Xuefeng,Zou Yang,Du Qunchao.Low yield ratio control strategy for thin 12MnNiVR storage tank steel plate[J].Heat Treatment of Metals,2022,47(6):173-177. |
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| Authors: | Zhang Yuefei Wang Kun Zhang Xuefeng Zou Yang Du Qunchao |
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| Affiliation: | 1. Shougang Jingtang Iron and Steel United Co., Ltd., Tangshan Hebei 063200, China; 2. Research Institute of Technology, Shougang Group Co., Ltd., Beijing 100043, China |
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| Abstract: | Effect of microstructure of quenched and tempered 12MnNiVR storage tank steel with different specifications on the yield ratio was analyzed by means of mechanical property test and microstructure observation with optical microscope and transmission electron microscopy. The test results show that the main microstructure of 12MnNiVR steel plate after quenching is martensite and part of acicular ferrite/bainitic ferrite, and the volume fraction of acicular ferrite in 18 mm thin steel plate is 10%-15%, while that in 33.5 mm heavy steel plate can reach more than 40%. By optimizing the quenching cooling rate, quenching temperature, tempering temperature and other process parameters for the thin steel plate, the volume fraction of acicular ferrite in the structure can be increased, so that the yield ratio of the thin steel plate can be reduced. |
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| Keywords: | 12MnNiVR steel plate thin plate yield ratio quenching tempering acicular ferrite |
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