| 高扩孔型铁素体/贝氏体双相钢组织性能研究 |
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| 引用本文： | 谷海容,张建,杨兴亮,刘永刚,潘红波.高扩孔型铁素体/贝氏体双相钢组织性能研究[J].武汉冶金科技大学学报,2011(6):419-423. |
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| 作者姓名： | 谷海容 张建 杨兴亮 刘永刚 潘红波 |
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| 作者单位： | 马鞍山钢铁股份有限公司技术中心,安徽马鞍山243000 |
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| 基金项目： | 国家自然科学基金资助项目（51075267） |
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| 摘 要： | 对540MPa级铁素体/贝氏体双相钢的组织性能进行分析研究。结果表明,试验钢的显微组织为85%左右的铁素体加上15%左右的贝氏体;铁素体晶粒尺寸细小,基体中有较高的位错密度和大量细小弥散的析出物;贝氏体在铁素体基体上分布均匀,以板条状为主,板条间分布有较多碳化物颗粒。通过合适的成分设计和控轧控冷手段获得的铁素体/贝氏体双相钢组织形态,可较好地保证材料所需的强度-拉伸凸缘性能匹配。
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| 关 键 词： | 铁素体/贝氏体双相钢 组织 强度 拉伸凸缘 |
Microstructure and property of highly hole-expandable ferrite/bainite dual-phase steel |
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| Authors: | Gu Hairong Zhang Jian Yang Xingliang Liu Yonggang Pan Hongbo |
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| Affiliation: | (Science and Technology Center,Maanshan Iron and Steel Co.,Ltd.,Maanshan 243000,China) |
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| Abstract: | The mechanical properties and microstructure of 540 MPa grade ferrite/bainite dual-phase steel were investigated.The results show that the tested steel is made up of about 85% ferrite and 15% bainite.The fine grain ferrite has high dislocation density and massive fine precipitates.The bainite is mainly lathy with many carbide articles and distributes among ferrite equably.This dual-phase microstructure obtained by appropriate chemical composition design and TMCP guarantees the required strength and stretch-flangeability of the material. |
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| Keywords: | ferrite/bainite dual-phase steel microstructure strength stretch-flangeability |
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