IMPULSE - Advanced Industrial Manufacture of Next-Generation MARBN Steel for Cleaner Fossil Plant

IMPULSE将使用新型“MARBN”高温钢，该钢最近在TSB项目“IMPACT”中开发，并显示出将蒸汽发电厂温度提高25 K的能力。IMPULSE的联盟包括大多数stimpact成员以及新的管道，焊接和创新研究合作伙伴，将把MARBN从实验室带到铸锭，管道和焊接的全面工业生产。这将提高当前和未来以钢铁为基础的蒸汽发电厂的效率和可靠性，从而增加供应的安全性，降低成本和碳排放。开发MARBN 8吨铸锭技术，并在高温（至1250℃）测试和制造模拟之后，进行两次全尺寸管材挤压试验，通过测试和电子金相验证产品。配套的焊接耗材也将开发，合格和测试。长期蠕变和蠕变疲劳数据生成将用于性能验证、材料标准化和压力容器设计规范。与KMM-VIN合作的互动将使与平行欧洲项目的建设性交流成为可能。伯明翰团队将描述晶粒结构，并将颗粒固定在坯料中，以便在管道中穿孔和挤压。Gleeble热机械模拟器将代表该结构范围的样品压缩到适合热挤压的不同应变温度和应变速率，以确定流动应力行为，并测量产生的晶粒尺寸。此外，环形样品将在仪器工具之间压缩（相同的温度和速率），以确定传热和摩擦系数。这些数据将用于基于fe的模型来模拟挤压过程，以便确定焊接和热处理后形成正确微观结构的工艺参数（温度、应变和应变率）。

IMPULSE will work with novel "MARBN" high temperature steel, recently developed in TSB project "IMPACT" and shown tooffer capability for an increase in steam power plant temperature of 25 K. IMPULSE, whose consortium includes mostIMPACT members together with new pipe, welding and innovative research partners, will take MARBN from the laboratoryon to full-scale industrial manufacture of ingot castings, pipework, and weldments. This will improve efficiency and reliabilityof current and future steel-based steam power plant, and thus increase security of supply and reduce cost and carbonemissions. MARBN 8-tonne ingot casting technology will be developed, and following high temperature (to 1250degreesC+) testing and manufacturing simulation, two full-scale pipe extrusion trials will be undertaken, with productvalidation by testing and electron metallography. Matching welding consumables will also be developed, qualified andtested. Long term creep and creep-fatigue data generation will feed into performance validation, materials standardisation,and pressure vessel design codes. Interaction with the KMM-VIN collaboration will enable constructive interchange withparallel European projects.The Birmingham team will characterise the grain structure and pinning particles in billet to be pierced and extruded intopipe. A Gleeble thermo-mechanical simulator will compress samples representing this range of structures to varying strainsat temperatures and strain rates suitable for hot extrusion to determine the flow stress behaviour and resulting grain sizeswill be measured. Additionally, ring-shaped samples will be compressed (same temperatures and rates) betweeninstrumented tools to determine heat transfer and friction coefficients. These data will be used in an FE-based model tosimulate the extrusion process so that process parameters (temperature, strain and strain rate) to develop the correctmicrostructure after welding and heat treatment can be determined.