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Effect Mechanism of Curling Temperature on the Toughness of Titanium Microalloyed High-strength Steel GCL700 [PDF]
The effect of curling temperature on the mechanical properties of Ti microalloyed high-strength steels was investigated using electron backscatter diffraction， transmission electron microscopy， scanning electron microscopy and mechanical experiments.The ...
Wang Yi, Che Zhichao, Chen Yufeng, Yang Shufeng, Zhang Junfen, Xue Qihe, Li Jingshe
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Plotting and evaluation on the Schaeffler diagram of Fe-Mn-Al-C low-density alloys with medium manganese and aluminum contents based on Thermo-Calc software [PDF]
, 2016 Low density steels attract the attention of structural steel researchers due to their good comprehensive mechanical properties and low density characteristic.
CAO Wen-quan +3 more
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Quality control and safety management of oil and gas pipelines during its whole life cycle [PDF]
, 2023 The development history and technical change of oil and gas pipeline quality management in China were reviewed focusing on pipeline quality control in the whole life cycle, on the basis of quality improvement of oil and gas pipelines in the construction ...
Changliang JIANG
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Jianzhu Gangjiegou Jinzhan, 2023 高强钢在建筑结构中的应用越来越广泛，高强螺栓连接是钢结构常见的连接方式。火灾作用下，高强螺栓的预紧力由于钢材强度退化、热膨胀变形和高温蠕变的影响会发生变化，从而影响连接的抗剪承载力。为探明高强钢连接的高强螺栓预紧力在高温下的变化规律，利用有限元软件ABAQUS建立了单个高强螺栓连接节点模型，分析了螺栓连接在高温下的预紧力变化，采用试验数据进行了验证。进而分析了螺栓规格、连接板厚度、钢材强度和升温速率四种参数对高强螺栓最大预紧力和预紧力完全丧失时温度的影响。分析表明：在ISO-834标准升温下 ...
王卫永, 张亿发
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Influence of tempering times on the mechanical properties of P91 weld joints [PDF]
, 2017 The P91 weld joint used in the experiment is re-tempered according to the heat treatment process. The effect of tempering times on its mechanical properties, including that at room temperature and high temperature, was then investigated in relation to ...
CUI Zheng +5 more
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Jianzhu Gangjiegou Jinzhan, 2008 为了探讨超高强度钢材在我国钢结构工程中应用的可行性,本文详细介绍了超高强度钢材的品种、力学性能和化学成分,分析了超高强度钢材钢结构构件的截面残余应力和几何初始缺陷及其对受压整体稳定特性的影响。结果表明,超高强度钢材轴心受压钢柱可采用比普通钢材钢柱高的整体稳定系数,提高其整体稳定承载力,更加充分地发挥超高强度钢材钢柱的强度优势。本文还介绍了超高强度钢材钢结构的优点及其在国内外多个建筑结构和桥梁工程中的具体应用情况和所取得的良好效果,为超高强度钢材钢结构在我国的工程应用提供了参考。
施刚, 石永久, 王元清
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Microstructure and impact toughness of hot rolled and tempered low carbon bainitic steel AH80DB [PDF]
, 2016 The microstructure,martensite/austenite(M/A) islands,precipitated phases,high-angle grain boundaries and effective grain size of hot rolled and tempered low carbon bainitic steel AH80 DB were studied by scanning electron microscopy(SEM),transmission ...
DING Yi +6 more
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Jianzhu Gangjiegou Jinzhan, 2016 高温和荷载共同作用下钢材产生明显的蠕变变形,对钢结构在火灾下的变形和受力性能产生较大影响。为了研究钢材高温蠕变对约束高强度Q460钢梁抗火性能的影响,采用ANSYS有限元软件建立约束钢梁结构分析模型,引入普通钢材高温力学性能和蠕变特性,分析了约束普通Q345钢梁的火灾响应,并与试验结果进行了对比,验证了模型的正确性。采用验证后的模型,引入高强度Q460钢材的高温力学性能和蠕变模型,分析了高温蠕变对约束高强度Q460钢梁抗火性能影响的程度,并将约束普通Q345钢梁和高强度Q460钢梁的抗火性能进行了对比 ...
何平召, 王卫永
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Jianzhu Gangjiegou Jinzhan, 2019 为了研究高强方钢管高强混凝土构件在往复荷载作用下的纯弯性能,采用ABAQUS有限元分析软件建立高强方钢管高强混凝土纯弯构件的数值模型,进行滞回性能的研究。基于已有高强方钢管高强混凝土纯弯构件试验的研究成果,将有限元分析结果与试验结果进行对比,验证了所建立数值模型的准确性。并运用此模型对不同钢材的屈服强度、不同核心混凝土的抗压强度以及不同含钢率的高强方钢管高强混凝土纯弯构件的弯矩-曲率骨架曲线和耗能情况进行对比分析,得出结论如下:构件的抗弯承载力随着钢材屈服强度或含钢率的提高而明显提高 ...
邱增美, 李帼昌, 杨志坚
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Jianzhu Gangjiegou Jinzhan, 2021 随着高强钢在工程应用中的日益推广,高强钢构件的局部失稳问题也更加突出。针对这一问题,使用波形钢板是一种高效且经济的解决方案。基于正交各向异性薄板理论,研究了简支波形钢板的整体受压屈曲,推导了屈曲临界应力公式,理论解与有限元解吻合较好。研究发现波形钢板的屈曲临界应力与波形数成负相关,由此对单波板件的整体屈曲性能进行参数分析,得出了最优波形。基于正交设计法,采用ABAQUS有限元软件对L形钢管轴压短柱进行有限元模拟,验证了单波板件在增强高强钢管构件的局部稳定性方面的有效性,所得结论也与板件参数分析结果相符。
毕成 +4 more
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