| 超高强铁素体/贝氏体双相钢的控轧控冷实验研究 |
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| 引用本文： | 高尉钧,王潑旭,张润奇,蔡一钦,李 壮,刘艳敏,于 涛,李朝华.超高强铁素体/贝氏体双相钢的控轧控冷实验研究[J].特殊钢,2019,40(6):18-22. |
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| 作者姓名： | 高尉钧 王潑旭 张润奇 蔡一钦 李 壮 刘艳敏 于 涛 李朝华 |
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| 作者单位： | 沈阳航空航天大学材料科学与工程学院，沈阳H0136 |
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| 基金项目： | 国家863科研项目(2015AA03A501),
沈阳航空航天大学大学生创新创业训练计划项目(110418033) |
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| 摘 要： | 在实验室Φ450 mm轧机上进行了铁素体/贝氏体双相钢（/%:0.22C,0.47Si,2.50Mn,0.05Al,0.02Nb,0.41 Cu）终轧800～860℃的控轧控冷实验。结果表明,实验钢经控轧控冷后,获得以铁素体/贝氏体双相组织为主并含有少量残余奥氏体+马氏体的复相组织。降低终轧温度、加快冷却速度可使铁素体晶粒细化。800℃终轧后层流冷却到560℃,然后空冷到室温的实验钢组织中残余奥氏体含量为11.4%,对强度和韧性的良好匹配贡献很大,其力学性能为:抗拉强度（Rm）1131MPa ,屈强比(Rp0.2/Rm)0.61,伸长率(A50)16%,强塑积(Rm×A50)18096 MPa·%
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| 收稿时间： | 2019-05-25 |
Experimental Research on Control Rolling and Cooling of Ultrahigh-Strength Ferrite-Bainite Dual-phase Steel |
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| Gao Weijun,Wang Haoxu,Zhang Runqi,Cai Yiqin,Li Zhuang,Liu Yanmin,Yu Tao,Li Zhaohua.Experimental Research on Control Rolling and Cooling of Ultrahigh-Strength Ferrite-Bainite Dual-phase Steel[J].Special Steel,2019,40(6):18-22. |
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| Authors: | Gao Weijun Wang Haoxu Zhang Runqi Cai Yiqin Li Zhuang Liu Yanmin Yu Tao Li Zhaohua |
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| Affiliation: | College of Materials Science and Engineering,Shenyang Aerospace University,Shenyang 110136 |
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| Abstract: | The control rolling and cooling test of ferrite-bainite dual phase steel (/% :0. 22C,0. 47Si,2. 50Mn, 0.05Al,0.02Nb,0.41 Cu) with finishing rolling at 800 ~860 ℃. is carried out by a Φ450 mm mill in laboratory. The results show that a microstructure containing ferrite, bainite, martensite and retained austenite in test steel can be obtained ；the ferrite grains are refined with decreasing finish rolling temperature and accelerating cooling；the amount of retained austenite is 11.4% when the steel finished rolling at 800 °C and subsequent laminar cooled to 560 ℃. and then air cooled to room temperature to contribute a lot to comprehensive properties of strength and toughness, its mechanical properties are UI Rm 1131 MPa,Rp0.2/Rm 0.61，Rm xA50 18096 MPa · % |
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| Keywords: | Ultrahigh-Strength Dual-Phase Steel Controlled Rolling and Cooling Low Finish Rolling Temperature Accelerating Cooling |
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