论文标题
在蠕变测试下对91级钢中焊接接头的内部应力分析：同步器DRX测试和建模
Internal stresses analysis on welded joint in Grade 91 steel under creep test: synchrotron DRX tests and modelling
论文作者
论文摘要
对91级钢焊接接头的蠕变破坏的分析和理解是能源行业的重要话题。以600 $^{\ circ} $ C，100MPA进行焊接接头的蠕变测试，然后以0％，10％，30％，50％，50％，80％的预期寿命和失败后中断。蠕变损伤的特征是位于中临界热影响区（ICHAZ）中的样品核心中的腔带。使用\ textIt {原位}同步XRD在蠕变条件下在不同的蠕变寿命下沿焊接接头进行了测试。实验结果表明，焊接接头的应变演化显着，蠕变损伤特征，在热影响区（HAZ）的局部最大值。此后，进行了有限元蠕变应变分析，以与实验结果进行比较。
The analysis and understanding of creep damage of Grade 91 steel welded joints is an important topic in the energy industry. Creep tests on welded joints were carried out at 600$^{\circ}$C, 100MPa and then interrupted at 0%, 10%, 30%, 50%, 80% of the expected life and after failure. Creep damage is characterised by cavity bands located exclusively in the core of the sample in the InterCritical Heat Affected Zone (ICHAZ). These samples were tested using \textit{in situ} synchrotron XRD along the welded joint under creep conditions for the different creep life time. The experimental results show a significant strain evolution and creep damage characteristic on the welded joint, with a local maximum at the Heat Affected Zone (HAZ). Following this, a finite element creep strain analysis was performed for comparison with the experimental results.
