Results 11 to 20 of about 128 (92)
Three-dimensional model reconstruction of pipeline with inner wall corrosion based on ultrasonic phased array technology [PDF]
, 2023 The inner wall corrosion of pipelines is concealed and hard to monitor in time. In order to visualize the shape of the internally corroded pipeline, as well as the defect volume and its spatial distribution, a three-dimensional (3D) model reconstruction ...
Miaomiao ZHANG +4 more
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Erosion corrosion behavior of AISI 304/316 stainless steel [PDF]
, 2016 304/316不锈钢以其良好的抗腐蚀性能和机械性能而得到广泛应用，尤其是在核电行业。然而，在其应用中存在着冲蚀磨损，腐蚀磨损，应力腐蚀开裂和高温氧化等问题。本文研究了304/316不锈钢两相射流冲蚀磨损行为，在NaCl、HCl和NaOH中的腐蚀磨损行为，在实验室模拟压水堆条件下的应力腐蚀开裂和高温氧化腐蚀行为。 （1）本文通过两相高速射流对304/316不锈钢的冲蚀实验，通过失重法和材料表面形貌、结构和成分微观分析，研究材料冲蚀磨损失效过程以及冲蚀机理分析 ...
周芳
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Integration and optimization of electrified LNG steam reforming hydrogen production system [PDF]
, 2023 The global demand for clean hydrogen energy is constantly increasing. However, the methane steam reforming process cannot satisfy the future social demand for clean hydrogen energy due to its high emission, while the development of water electrolysis ...
Huchao SONG +5 more
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Investigation of Microstructure, Mechanical Properties and Irradiation Behaviors of Nuclear Application Steels [PDF]
, 2015 在核能领域应用的关键材料的服役条件非常苛刻，需要在辐照、高温、腐蚀、受应力、热循环等极端条件下长期稳定工作，并按照可预期的方式老化、失效。堆内构件的性能与特性决定了核能可以达到的安全水平。中国从美国西屋公司引进、吸收与消化AP1000核电技术，以形成具有自主知识产权的核电技术，并在此过程中着重对一系列核能关键用材料进行了相关研发。本论文以国产SA-182F304钢、304SS钢、CNST1钢、CNST2钢和CNSS3钢为研究对象，对候选钢的微观结构、微观化学、力学行为和抗辐照性能进行了详细研究 ...
陈芙梁
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Research on crack repair for Ⅳ-stage guide vanes of aero-engine [PDF]
In order to meet the reliability of an aero-engine and ensure the flight safety of helicopter, the welding repair of the crack fault of the Ⅳ-stage guide vanes is studied.
GE Haifeng +5 more
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Investigation of Irradiation Behaviors of SA-240 304 andSA-738 Gr.BSteels [PDF]
, 2017 核应用材料的性能决定了核电站的安全程度，本论文以SA-240304钢、SA-738Gr.B(QT)钢和SA-738Gr.B(SR)钢为对象，采用金相显微镜、透射电子显微镜和正电子湮没技术深入研究了三种核能用钢在离子辐照前后的微观组织、抗辐照性能以及辐照缺陷的退火演化行为等，并探讨了相关机理。 未辐照SA-240304钢的组织为奥氏体相，晶粒度约为5级，基体中网状位错和直线状的形变孪晶带相互交织，分布不均匀，在基体中未观察到尺寸较大的碳化物颗粒析出相。两种SA-738Gr ...
马永正
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Design and Research on Anti-assembly Drop of Integrated Fast Reactor Cantilever Transfer Mechanism [PDF]
Nuclear energy is a high-tech strategic industry and a crucial support for fulfilling emission reduction commitments. The integrated fast reactor represents the world’s mainstream development direction and offers the highest nuclear fuel cycle efficiency.
LIU Zhifang, GUO Xiaoxian, YU Tuanjie, ZHANG Wei, WANG Haozhong
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Teshugang, 2021 The edge crack cause of 309L austenitic stainless steel plate in the hot rolling is analyzed by means of metallographic structure observation and thermodynamic calculation. Results test show that the hot rolling temperature of steel plate 309L (0.012% C ,
杨兆 +4 more
doaj
Jianzhu Gangjiegou Jinzhan, 2020 采用轻质结构构件常用的奥氏体不锈钢薄板制成双剪螺栓连接件,测定不锈钢螺栓连接板件翘曲对承载力的影响。试验设计了2个双剪螺栓连接试件,端部距离是螺栓连接试件的主要变量。用试验机对双剪试件进行了拉伸试验,并绘制试件的荷载-位移曲线。试验中出现了板件翘曲及试件承载力降低现象。此外,将试验结果与有限元模拟结果进行对比,两者吻合较好,验证了有限元分析的有效性。并采用该模型对不同板厚、端部距离、边缘距离以及螺栓直径的4组8个连接试件进行分析。最后,提出了双剪螺栓连接翘曲极限承载力修正公式,并通过数值模拟结果加以验证。
刘文渊, 孔境, 段文峰
doaj
Study on Sective Corrosion Behaviors and Mechanism of Duplex Stainless Steel [PDF]
, 2004 双相不锈钢是固溶组织中含有铁素体相和奥氏体相两种金相结构的不锈钢，具有相当优良的耐蚀性，是广泛应用于苛刻环境的钢种。双相不锈钢由于两相化学成分和晶体结构的不同，导致了物理和化学性质存在差异，在介质中表现出两相腐蚀性的差异，即优选腐蚀。两相中相对脆弱的相往往是优选腐蚀的诱发区，而优选腐蚀的发生、发展可导致材料或结构的危险性腐蚀破坏，因此这种特殊的腐蚀形式对双相不锈钢的实际应用造成重要隐患。研究双相不锈钢的优选腐蚀行为，并探讨其腐蚀机理具有重要的实际意义。 本文主要利用电化学技术结合SEM、EDS ...
付燕
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