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首页> 外文会议>ASME(American Society of Mechanical Engineers) Pressure Vessels and Piping Conference: Residual Stress, Fitness - for - Service and Manufacturing Processes; 20030720-20030724; Cleveland,OH; US >Fracture Assessment of the High Strength Super-Martensitic Stainless Steel Welds by SINTAP Defect Assessment Procedure
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Fracture Assessment of the High Strength Super-Martensitic Stainless Steel Welds by SINTAP Defect Assessment Procedure

机译：通过SINTAP缺陷评估程序评估高强度超马氏体不锈钢焊缝的断裂

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摘要

13% Cr supermartensitic stainless steel is an adequate substitute material for the conventional carbon and duplex stainless steel pipes for mild corrosive environments in the oil and gas industries. By development of these new steel and respective welding technologies, structural integrity analysis of the welded pipes, is essential and a challenging task. Depending on the welding process, filler wire used, the deformation and failure behaviours of the welded pipes could be different. In this study, fitness for service analysis verified with Submerged Arc welded Middle Tension, M(T), plates as well as for the reeling deformation during the pipe-laying process. This was done by applying analysis Levels 0,Ⅰ, Ⅱ and Ⅲ of a recently developed European Structural Integrity Assessment Procedure (SINTAP). The goal was first of all to verify SINTAP's load-carrying capacity predictions for welded M(T) specimens (wide plates) by comparing them with corresponding experimental data. SINTAP was also used for estimating the maximum tolerable crack size within the base or weld regions under about 2.7% applied strain, which is the strain equal to the reeling process. The estimated load-carrying capacity of the plates were found on the safe side with acceptable conservatism for all the SINTAP analysis Levels.
机译：13％Cr的超马氏体不锈钢是石油和天然气工业中轻度腐蚀环境下常规碳钢和双相不锈钢管道的适当替代材料。通过开发这些新的钢及其相应的焊接技术，对焊接管的结构完整性进行分析是必不可少且具有挑战性的任务。取决于焊接工艺，所使用的填充焊丝，焊接管的变形和破坏行为可能会有所不同。在这项研究中，使用埋弧焊接中间张力M（T）板验证了服务分析的适用性，以及在管道铺设过程中的卷取变形。这是通过应用最新制定的《欧洲结构完整性评估程序》（SINTAP）的分析级别0，Ⅰ，Ⅱ和Ⅲ完成的。目的首先是通过将SINTAP与焊接的M（T）试样（宽板）进行比较，并与相应的实验数据进行比较，以验证SINTAP的承载能力预测。 SINTAP还用于估计在大约2.7％的外加应变（等于卷取过程的应变）下基部或焊接区域内的最大容许裂纹尺寸。对于所有SINTAP分析水平，在安全方面都可以找到板的估计承载能力，并且具有可接受的保守性。

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