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

ImPulse将与TSB项目“Impact”中最近开发的新型“MARBN”高温钢合作，该钢被证明能够将蒸汽发电厂的温度提高25K。ImPulse的财团包括大多数IMPACT成员以及新的管道、焊接和创新研究合作伙伴，将把MARBN从实验室带入铸锭、管道和焊接件的全面工业生产。这将提高当前和未来钢基蒸汽发电厂的效率和可靠性，从而提高供应的安全性，降低成本和碳排放。将开发MARBN 8吨钢锭铸造技术，经过高温(至1250℃)测试和制造模拟，将进行两次全尺寸管材挤压试验，并通过测试和电子金相验证产品。还将开发、合格和测试与之匹配的焊接材料。长期的蠕变和蠕变-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的欧洲项目进行建设性的交换成为可能。伯明翰团队将表征要穿孔和挤压成钢管的坯料中的颗粒结构和钉扎颗粒。Gleeble热机械模拟器将代表这一结构范围的样品压缩到适合热挤压的温度和应变速率下的不同应变，以确定流动应力行为和产生的晶粒度。此外，环状样品将在仪器工具之间进行压缩(相同的温度和速率)，以确定热传递和摩擦系数。这些数据将用于基于有限元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组织的工艺参数(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.