| 高强热轧双相钢中组织对性能的影响 |
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| 引用本文： | 吴腾,李会,吴润,宋述鹏. 高强热轧双相钢中组织对性能的影响[J]. 材料科学与工程学报, 2018, 0(1): 1-4,30. DOI: 10.14136/j.cnki.issn1673-2812.2018.01.001 |
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| 作者姓名： | 吴腾 李会 吴润 宋述鹏 |
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| 作者单位： | 武汉科技大学材料与冶金学院,湖北武汉,430080涟源钢铁有限公司技术中心,湖南娄底,417009 |
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| 基金项目： | 国家自然科学基金资助项目，湖北省自然科学基金资助项目 |
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| 摘 要： | 采用低成本成分设计,应用超快冷技术为核心的新一代TMCP技术可以得到强韧性较好的高强热轧双相钢,本文研究了该试验钢组织对性能的影响。研究表明:铁素体晶粒尺寸在5μm处波动;条状马氏体比块状马氏体的n值要高;抗拉强度随马氏体体积分数的增加而增加;组织中小尺寸的铁素体和马氏体提高了裂纹弛豫能力,有利于试样的韧性和n值的提高。
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| 关 键 词： | 热轧双相钢 超快冷 力学性能 显微组织 hot-rolled dual phase steel ultra fast cooling mechanical property microstructure |
Effect of Microstructure on Mechanical Properties of High Strength Hot-rolled Dual Phase Steel |
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| WU Teng,LI Hui,WU Run,SONG Shupeng. Effect of Microstructure on Mechanical Properties of High Strength Hot-rolled Dual Phase Steel[J]. Journal of Materials Science and Engineering, 2018, 0(1): 1-4,30. DOI: 10.14136/j.cnki.issn1673-2812.2018.01.001 |
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| Authors: | WU Teng LI Hui WU Run SONG Shupeng |
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| Abstract: | By using inexpensive composition design,and ultra fast cooling technology as the core of a new generation TMCP technology,high strength hot-rolled dual phase steel with better obdurability was obtained.And then the effect of the microstructure on steel properties have been studied Results show that Ferrite grain size fluctuates 5μm;Strip martensite of n value is higher than the nubbly martensite;Tensile strength increases with the increase of martensite volume fraction;small size of ferrite and martensite microstructure could improve the ability of relaxation crack,benefit to the improvement of the toughness and the n value. |
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