Results 1 to 10 of about 395 (100)
Zhongguo youzhi, 2023 奥氏体不锈钢在油脂设备中应用广泛，为高效、低成本地获得稳定、高质量的奥氏体不锈钢焊缝，在等离子弧焊+氩弧焊（PAW+TIG）组合焊基础上，提出PAW填丝打底焊+TIG脉冲盖面焊的改进PAW+TIG组合焊工艺，以5 mm厚的S30408不锈钢为例进行焊接试验，通过无损检测、拉伸试验、弯曲试验对焊缝进行检测，并梳理了改进PAW+TIG组合焊工艺实施要素。结果表明，改进PAW+TIG组合焊焊缝的外观良好，未出现焊接变形，各项性能满足工艺要求，焊接速度提升明显。采用该工艺对不锈钢进行焊接能延长油脂设备使用寿命 ...
刘玉阳1，2，王国栋1，2，黄永娜1，2，张春鹏1，2，褚洪俊1，2， 孙杰男1，2，赵树超1，2，姚俊双1，2 LIU Yuyang1,2,WANG Guodong1,2, HUANG Yongna1,2, ZHANG Chunpeng1,2 , CHU Hongjun1,2, SUN Jienan1,2, ZHAO Shuchao1,2,YAO Junshuang1,2
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Jianzhu Gangjiegou Jinzhan, 2022 对304D奥氏体和TSZ410铁素体不锈钢进行了高温过火冷却后的力学性能试验研究，得到了高温过火冷却后不锈钢材料的弹性模量、名义屈服强度、抗拉强度、断后伸长率等主要力学性能指标，并将试验结果与已有同类试验结果进行对比。结果表明，两种不锈钢在不同过火温度和冷却方式（自然冷却、浸水冷却）下有不同的外观特征，过火温度高于400 ℃时，TSZ410铁素体不锈钢试件表面颜色均比304D奥氏体不锈钢要深；高温过火冷却对304D奥氏体不锈钢的屈服强度有一定的影响，对其弹性模量、极限强度和断后伸长率的影响不大 ...
陶宇超 +4 more
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Jianzhu Gangjiegou Jinzhan, 2021 精确掌握材料高温下的性能参数,对结构抗火设计的准确性具有十分重要的意义。以S30408奥氏体不锈钢为研究对象,在现有S30408不锈钢高温材料性能试验的基础上,研究发现S30408不锈钢在同种条件下,相比碳钢具有较低的升温速率,且S30408不锈钢在600℃时仍能保持50%以上的强度与刚度。但不锈钢具有更大的热膨胀率,高温给结构的稳定性带来的威胁更大。其次,对比分析了国内外学者所提出的常温及高温下不锈钢的本构模型,根据S30408不锈钢高温下性能参数的变化规律,欧洲规范给出的建议值偏不安全 ...
谢宝超 +5 more
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Jianzhu Gangjiegou Jinzhan, 2023 进行了6个不锈钢管混凝土试件的纯弯试验研究，分析了弯曲荷载作用下混凝土类型和截面形状对新型S36950奥氏体不锈钢管混凝土构件破坏模态、荷载-变形关系、抗弯刚度与承载力的影响规律。试验结果表明：固废混凝土对新型不锈钢管混凝土纯弯构件的整体破坏模态影响不大，但固废混凝土对构件抗弯承载力的提升与刚度的改善有积极作用。随后建立了不锈钢管固废混凝土纯弯构件有限元模型并验证既有材料模型的适用性，最后分析了各规范抗弯承载力计算方法的适用性和预测精度。
余鑫, 欧阳帆, 张祖宽, 王志滨
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Wall-thickness reduction of AP1000 primary coolant pipes subjected to cold roll-forming [PDF]
, 2016 A modified Johnson-Cook model was proposed based on the true stress-strain data of 316LN stainless steel and it was successfully used to describe the deformation characteristic of the steel at room temperature and low strain rate.
WANG Peng +3 more
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Corrosion behavior of Ni-base alloy C276 in supercritical water [PDF]
, 2016 This article is focused on the corrosion behavior of Ni-base alloy C276 exposed to 550-650℃/25 MPa supercritical water. The oxidation kinetics,oxide morphology,element distribution and structure of the oxide film were analyzed by using weight gain ...
SHEN Chao, WANG Jia-mei, ZHANG Le-fu
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Electrochemical corrosion behavior of 304 stainless steel in simulated pressurized water reactor primary water [PDF]
, 2017 The effects of chloride concentration and dissolved oxygen on the high-temperature electrochemical corrosion behaviors of 304 stainless steel sheets were investigated in simulated pressurized water reactor (PWR) primary water.
LU Hui +4 more
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Influence of Ultra-low Temperature Thermal Fatigue on Microstructure and Mechanical Property of Z2CND18.12 Austenitic Stainless Steel [PDF]
At present, ice plug technology is often used in the maintenance process of nuclear power plants to isolate part of the main pipeline and use refrigerant such as liquid nitrogen for ultra-low temperature treatment, so that the internal fluid is frozen to
ZHANG Yunhao1, , MA Yan1, ZHANG Tao2, LI Shijiang1, JIANG Xingyu1, LAN Yuning1, ZHU Huiping1, ZHOU Du2, TONG Zhenfeng1,
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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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Teshugang, 2023 The high thermal conductivity,low coeffcient of thermal expansion and good corrosion resistance of 445J2 ferrit- ic stainless steel make it be a good candidate for some parts in the bromine cooler.
武卓杰 +6 more
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