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Study of the Simulated Heat Affected Zone of Creep Resistant 9-12 percent Advanced Chromium Steel

机译：耐蠕变9-12％先进铬钢模拟热影响区的研究

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摘要

Global warming leads to research-development attempts worldwide with a view to reduce CO_2 emission. Therefore, in the energy supply sector, a special focus has been directed to further development of steels that can endure the ultra-supercritical steam conditions. Our article presents the basic study on weldability of the advanced 9-12 percent chromium steel applying the thermomechanical simulation of the heat affected zone (HAZ). The changes of microstructures and material properties of HAZ before and after postweld heat treatment (PWHT) have been analyzed and compared by light microscopy, scanning electron microscopy (SEM), hardness measurements, and impact toughness testing. Microstructures at representative points during typical welding cycle and PWHT were studied in details.
机译：全球变暖导致世界范围内的研发尝试，以减少CO_2的排放。因此，在能源供应领域，人们特别关注可以承受超超临界蒸汽条件的钢材的进一步开发。本文通过热影响区（HAZ）的热力学模拟，对高级9-12％铬钢的可焊性进行了基础研究。通过光学显微镜，扫描电子显微镜（SEM），硬度测量和冲击韧性测试，分析和比较了焊后热处理（PWHT）之前和之后的热影响区的组织和材料性能变化。详细研究了典型焊接周期和PWHT过程中代表点的显微组织。

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