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欧洲海洋平台用厚板品种及工艺的发展 被引量:13
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作者 黄维 张志勤 《建筑钢结构进展》 北大核心 2012年第6期8-13,共6页
介绍了欧洲海洋平台用厚板的种类、供货尺寸、生产工艺的发展及其性能,并通过欧洲典型海洋平台实例介绍了其应用情况。认为欧洲钢铁企业对于海洋平台用钢的研发、品种系列化及标准化方面值得借鉴,国内钢铁企业应加快推进海洋工程用钢国... 介绍了欧洲海洋平台用厚板的种类、供货尺寸、生产工艺的发展及其性能,并通过欧洲典型海洋平台实例介绍了其应用情况。认为欧洲钢铁企业对于海洋平台用钢的研发、品种系列化及标准化方面值得借鉴,国内钢铁企业应加快推进海洋工程用钢国家标准的制订,加快高附加值品种的开发进度,以满足国内市场的需求。 展开更多
关键词 海洋平台用钢 品种 热机械轧制 变截面钢板
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船板市场需求状况分析 被引量:4
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作者 徐洪庆 邢相勤 +1 位作者 苗钊 孙卫华 《宽厚板》 2001年第6期10-13,共4页
近年来由于我国造船行业大规模进行技术改造 ,大量承接船舶定单 ,使我国的造船能力有了较大提高。为此 ,船板的消耗也有很大的变化。本文列举了我国造船业的技术改造和造船行情 ,并对船板的消耗和供应情况进行了分析。
关键词 船板 造船 热机械轧制 市场分析
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钢经形变热处理的组织控制及强韧性改善 被引量:4
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作者 牧正志 朱祖昌 《上海金属》 CAS 1993年第6期9-15,共7页
本文主要论述了控制轧制、过冷奥氏体形变热处理的形变诱发塑性对钢显微组织和强韧性的影响,并叙述了相应的机制。热轧、析出、再结晶、相变、冷变形和时效的巧妙复合的特殊热处理工艺使10Ni-18Co-12Mo-Ti钢的抗拉强度达4292MPa。
关键词 形变热处理 显微组织 强度
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Development of Tailored Structure and Tensile Properties of Thermomechanical Treated Micro Alloyed Low Carbon Dual Phase Steel 被引量:1
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作者 Hany Khalifa G. M. Megahed +1 位作者 Taher El-Bitar Mohamed A. Taha 《Materials Sciences and Applications》 2020年第12期851-866,共16页
Direct hot rolled dual phase steel production represents a challenging route, compared with cold rolled and intercritical annealing process, due to complex and sophisticated control of the hot strip mill processing pa... Direct hot rolled dual phase steel production represents a challenging route, compared with cold rolled and intercritical annealing process, due to complex and sophisticated control of the hot strip mill processing parameters. Instead, high technology compact slab production plant offers economic advantages, adequate control and prompt use of the advanced thermomechanical controlled rolling. The current work aims to obtain different structures and tensile properties by physical simulation of direct hot rolled niobium micro alloyed dual phase low carbon steel by varying the metallurgical temperatures of hot strip mill plant. This starts with adaptation of the chemical analysis of a low carbon content to fall far from the undesired peritectic region to avoid slab cracking during casting. Thermodynamic and kinetics calculations by Thermo-Calc 2020 and JMat pro software are used to define the transformation’s temperatures Ae1 and Ae3 as well as processing temperatures;namely of reheating, finishing rolling, step cooling and coiling temperatures. The results show that the increase of finishing rolling temperature from 780<span style="white-space:nowrap;">&deg;</span>C to 840<span style="white-space:nowrap;">&deg;</span>C or decreasing either of step cooling duration at ferrite bay from 7 to 4 seconds, enhances yield and tensile strengths, all due to more martensite volume fraction formation. The yield and tensile strengths also increase with decreasing coiling temperature from 330<span style="white-space:nowrap;">&deg;</span>C to 180<span style="white-space:nowrap;">&deg;</span>C, which is explained due to the increase of dislocation densities resulted from the sudden shape change during martensite formation at the lower coiling temperature in additional to the self-tempering of martensite formed at higher coiling temperatures which soften the dual phase steel. 展开更多
关键词 Micro-Alloyed Steel Dual Phase Steel thermomechanical Simulation thermomechanical rolling Compact Slab Production CSP Hot Strip Mill HSM
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Effect of Laminar Cooling on Phase Transformation Evolution in Hot Rolling Process 被引量:2
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作者 NING Lin-xin YANG Dai-jun +1 位作者 J Lin T A Dean 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2010年第10期28-32,44,共6页
The effect of temperature variation owing to the cooling pattern (CP) on the microstructural evolution was investigated by establishing a thermomechanical coupled FE (finite element) model. A set of constitutive e... The effect of temperature variation owing to the cooling pattern (CP) on the microstructural evolution was investigated by establishing a thermomechanical coupled FE (finite element) model. A set of constitutive equations of phase transformation was implanted into the commercial FE solver MARC through the user defined subroutine CR- PLAW, and the temperature field was calculated by another user defined subroutine FILM. The results show that the final mierostructure is completely bainite phase for CP one, 98% of bainite phase and 2% of ferrite phase for CP two, and 55% of bainite phase, 35% of pearlite phase and 10% of ferrite phase for CP three. 展开更多
关键词 hot rolling laminar cooling system cooling pattern thermomechanical modelling microstructural evolution constitutive equation phase transformation
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Effect of Delay Time on Microstructural Evolution during Warm Rolling of Ti-Nb-IF Steel
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作者 A. Najafi-zadeh R.Ebrahimi 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2004年第1期86-88,共3页
The effect of delay time with constant first finishing pass temperature (800℃) has been investigated by means of multi-pass torsion tests on Ti-Nb-IF steel. All the tests have been carried out at a strain rate of 2 s... The effect of delay time with constant first finishing pass temperature (800℃) has been investigated by means of multi-pass torsion tests on Ti-Nb-IF steel. All the tests have been carried out at a strain rate of 2 s-1 with 11 passes and 0.3 strain each pass. During the final pass, dynamic recrystallization occurs to a degree that depends on the delay time. In short interpass time (1 s) and at these temperatures (T≤800℃) there is not enough time to start static recrystallization, therefore, accumulation of strain occurs and after some passes, strain reaches a critical strain for starting dynamic recrystallization. In this study, the changes of mean flow stress during each pass and also the microstructural observation confirms that dynamic recrystallization occurs after some passes in ferrite phase of this steel. The stress-strain curves with constant temperature obtained by using a kinetic model and compensation of the increasing mean flow stress with decreasing temperature. Thus, this result also confirms that dynamic recrystallization occurs in warm rolling of this IF steel. 展开更多
关键词 Warm rolling Perrite rolling thermomechanical processing IF steels
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BSG-125TT SEW高抗挤套管性能研究 被引量:2
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作者 李周波 刘和平 +3 位作者 何勇 焦炜 高盟召 陈浩明 《焊管》 2021年第12期27-32,共6页
针对川渝地区页岩气开采过程中出现的套损问题,设计开发了BSG-125TT SEW高抗挤套管,并对其力学性能、微观组织、抗挤毁性能进行了分析。结果显示,在910℃淬火+580℃回火热处理条件下,BSG-125TT钢级SEW高抗挤套管的屈服强度为960 MPa,抗... 针对川渝地区页岩气开采过程中出现的套损问题,设计开发了BSG-125TT SEW高抗挤套管,并对其力学性能、微观组织、抗挤毁性能进行了分析。结果显示,在910℃淬火+580℃回火热处理条件下,BSG-125TT钢级SEW高抗挤套管的屈服强度为960 MPa,抗拉强度为1020 MPa,母材横向冲击功为126 J,焊缝横向冲击功为105 J,焊缝与母材组织及性能基本一致。研究表明,BSG-125TT SEW高抗挤套管具备高强韧性匹配及优异的综合性能,满足页岩气特殊工况开发的需求,为油气田开采选用合理套管提供了装备技术支撑。 展开更多
关键词 HFW 高抗挤套管 热机械轧制 调质处理 力学性能
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桥梁结构用S460ML-Z35高强度钢板的开发
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作者 潘中德 《山东冶金》 CAS 2021年第2期43-45,共3页
介绍了桥梁结构用S460ML-Z35高强度钢板的设计思路、生产工艺和综合性能研究。试验结果表明,热机械轧制工艺生产的S460ML-Z35高强度钢板具有良好的综合性能,钢板屈强比≤0.85,低温冲击优异、-40℃冲击值≥200 J,厚度方向性能满足EN1016... 介绍了桥梁结构用S460ML-Z35高强度钢板的设计思路、生产工艺和综合性能研究。试验结果表明,热机械轧制工艺生产的S460ML-Z35高强度钢板具有良好的综合性能,钢板屈强比≤0.85,低温冲击优异、-40℃冲击值≥200 J,厚度方向性能满足EN10164标准Z35级别,内部质量按EN10160标准探伤满足S2E3级要求,各项性能指标超过EN10025-4标准及用户技术要求。 展开更多
关键词 S460ML-Z35钢 化学成分 热机械轧制 碳当量 性能指标
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板材热轧热力耦合有限元模拟 被引量:13
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作者 刘才 崔振山 《机械工程学报》 EI CAS CSCD 北大核心 1998年第4期35-39,共5页
建立了三维热力耦合问题弹塑性有限变形有限元方法,并对板材热轧过程进行了计算机模拟。材料流动应力模型中考虑了应变历史、应变速率和温度的影响,导出了与其相应的本构关系矩阵。应用该方法可以给出轧件变形过程中诸如温度场、应变... 建立了三维热力耦合问题弹塑性有限变形有限元方法,并对板材热轧过程进行了计算机模拟。材料流动应力模型中考虑了应变历史、应变速率和温度的影响,导出了与其相应的本构关系矩阵。应用该方法可以给出轧件变形过程中诸如温度场、应变场和应变速率场等各种热力结果。算例表明,该方法具有较好的精度。 展开更多
关键词 热力耦合 板材 热轧 有限元模拟 弹塑性变形
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引线框架用铜合金C194的制备与性能研究 被引量:5
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作者 龙红军 杨元政 +1 位作者 陈小祝 陶平均 《热加工工艺》 CSCD 北大核心 2009年第16期125-128,132,共5页
采用形变热处理工艺制备了引线框架用铜合金C194,利用直流低电阻测试仪、维氏硬度计、金相显微镜和扫描电镜等研究了形变热处理工艺中时效温度和时间、二次时效间的冷轧形变率尤其是最终精轧率对热轧态C194性能和组织的影响。结果表明:... 采用形变热处理工艺制备了引线框架用铜合金C194,利用直流低电阻测试仪、维氏硬度计、金相显微镜和扫描电镜等研究了形变热处理工艺中时效温度和时间、二次时效间的冷轧形变率尤其是最终精轧率对热轧态C194性能和组织的影响。结果表明:形变热处理工艺为时效前预先冷轧37.5%、二次时效(500℃×2h+500℃×2h)、一次时效后以50%形变率冷轧,二次时效后终轧形变率为60%,轧制路线为1.6mm→1.0mm→0.5mm→0.2mm时,试样获得最佳综合性能,导电率为78%IACS,强度为550MPa,硬度为158.9HV,且具有良好的抗高温软化性能。 展开更多
关键词 引线框架 铜合金C194 热轧态 形变热处理 终轧形变率
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形变热处理对低浓度CuCr合金性能的影响 被引量:5
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作者 夏承东 汪明朴 +4 位作者 徐根应 贾延琳 李周 龚深 虞红春 《功能材料》 EI CAS CSCD 北大核心 2011年第5期872-876,共5页
用两种形变热处理工艺制备了Cu-0.4Cr合金,并通过测定不同工艺合金的硬度和电导率,研究了形变热处理工艺对合金性能的影响,以得到硬度和电导率综合性能优异的且适宜工业化批量生产的工艺。结果表明,CuCr合金在线热轧淬火后经60%冷轧并在... 用两种形变热处理工艺制备了Cu-0.4Cr合金,并通过测定不同工艺合金的硬度和电导率,研究了形变热处理工艺对合金性能的影响,以得到硬度和电导率综合性能优异的且适宜工业化批量生产的工艺。结果表明,CuCr合金在线热轧淬火后经60%冷轧并在450℃时效30min后其硬度和电导率分别为156Hv,86.4%IACS,该工艺适合工业化批量生产;经固溶—冷轧80%—450℃时效30min后,合金硬度和电导率可达176Hv,80.2%IACS,虽然该工艺所制备合金性能优异,但难以实现工业化批量生产。对所得结果分析表明,所制备CuCr合金极易过时效,且冷轧变形量越大,时效温度越高,合金过时效越明显,生产中难以控制。微合金化以延缓时效是该合金值得研究的方向。 展开更多
关键词 Cu-0.4Cr合金 形变热处理 在线热轧-淬火 性能 过时效
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Theoretical Explanation of Uneven Transverse Temperature Distribution in Wide Thin Strip Rolling Process 被引量:2
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作者 TIAN Li-li Paolo Patrizi +1 位作者 ZHANG Jie Fabio Miani 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2010年第4期18-23,共6页
A new theoretical thermomechanical explanation of the uneven transverse temperature distribution, along the width for thin and wide hot rolled strip was proposed. In particular, starting from the irregular pressure an... A new theoretical thermomechanical explanation of the uneven transverse temperature distribution, along the width for thin and wide hot rolled strip was proposed. In particular, starting from the irregular pressure and friction distribution which led to an uneven heat generation, a 2D mathematical model of calculating the transverse termperature distribution was presented. A physical explanation for this problem was given and the model was used as an essential basis to build a corresponding FEM simulation model, in which heat loss and generation were considered. Deformation and friction heat were described in details. For a clearer and more logical analysis, the heat generation problem was split into two parts: one for the strip centre, and one for the sides, in correspondence with the temperature peak points at 100 mm from the strip edge. Finally, the result shows that how thenew theoretical model can lead to the exact interpretation of the measured uneven temperature distribution. 展开更多
关键词 hot strip rolling strip temperature distribution strip thermomechanical behaviour deformation heat friction heat
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Effect of Thermomechanical Controlled Processing on Mechanical Properties of 490 MPa Grade Low Carbon Cold Heading Steel 被引量:1
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作者 LI Zhuang 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2009年第3期43-48,共6页
Thermomechanical controlled processing (TMCP) of low carbon cold heading steel in different austenite conditions were conducted by a laboratory hot rolling mill. Effect of various processing parameters on the mechan... Thermomechanical controlled processing (TMCP) of low carbon cold heading steel in different austenite conditions were conducted by a laboratory hot rolling mill. Effect of various processing parameters on the mechanical properties of the steel was investigated. The results showed that the mechanical properties of the low carbon cold heading steel could be significantly improved by TMCP without heat treatment. The improvement of mechanical properties can be attributed mainly to the ferrite grain refinement due to low temperature rolling. In the experiments the better ultimate tensile strength and ductility are obtained by lowering finishing cooling temperature within the temperature range from 650 ℃ to 550 ℃ since the interlamellar space in pearlite colonies become smaller. Good mechanical properties can be obtained in a proper austenite condition and thermomechanical processing parameter. The ferrite morphology has a more pronounced effect on the mechanical behavior than refinement of the microstructure. It is possible to realize the replacement of medium-carbon by low-carbon for 490 MPa grade cold heading steel with TMCP. 展开更多
关键词 thermomechanical controlled processing TMCP low carbon cold heading steel low temperature rolling finishing cooling temperature
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“高温大变形+超快冷”工艺在管线钢生产中的应用 被引量:8
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作者 肖宝亮 许云波 +2 位作者 张福生 侯晓英 王国栋 《钢铁》 CAS CSCD 北大核心 2010年第6期49-53,58,共6页
通过热模拟和实验室热轧试验,研究了"高温大变形+超快速冷却"工艺和传统TMCP工艺下试验钢显微组织的区别和强韧性规律。结果表明,超高冷却速率使过冷度变大,形核率升高,新相形核主要以晶内形核为主。"高温大变形+超快速冷却"工艺... 通过热模拟和实验室热轧试验,研究了"高温大变形+超快速冷却"工艺和传统TMCP工艺下试验钢显微组织的区别和强韧性规律。结果表明,超高冷却速率使过冷度变大,形核率升高,新相形核主要以晶内形核为主。"高温大变形+超快速冷却"工艺得到的细化针状铁素体、高密度位错以及弥散细小的析出物保证了材料的综合性能,使热轧钢板综合性能达到了X90标准,并且轧制力比传统TMCP工艺低1 000~7 000 kN。高温大变形后的弛豫过程使组织严重粗化,强韧性明显降低。 展开更多
关键词 新一代超快冷技术 形核 析出强化 轧制力 管线钢
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