The compressive creep of silicon carbide fiber reinforced Ti₃SiC₂ MAX phase with both fine and coarse microstructure was investigated in the temperature range of 1000‐1300°C. Comparison of only steady‐state creep was done to understand the response of fabricated composite materials toward creep deformation. It was demonstrated that the fibers are more effective in reducing the creep rates for the coarse microstructure by an increase in activation energy compared to the variant with a finer microstructure, being partly a result of the enhanced creep rates for the microstructure with larger grain size. Grain boundary sliding along with fiber fracture appears to be the main creep mechanism for most of the tested temperature range. However, there are indications for a changed creep mechanism for the fine microstructure for the lowest testing temperature. Local pores are formed to accommodate differences in strain related to creeping matrix and predominantly elastically deformed fibers during creep. Microstructural analysis was done on the material before and after creep to understand the deformation mechanics.

中文翻译：

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短SiC纤维/ Ti3SiC2 MAX相复合材料：制造和蠕变评估

碳化硅纤维增强Ti ₃ SiC ₂的压缩蠕变在1000-1300°C的温度范围内研究了具有精细和粗糙微观结构的MAX相。仅比较稳态蠕变，以了解复合材料对蠕变变形的响应。已经证明，与具有更细微结构的变体相比，纤维通过增加活化能更有效地降低了粗微结构的蠕变速率，部分原因是具有较大晶粒尺寸的微结构的蠕变速率提高。在大多数测试温度范围内，晶界滑动以及纤维断裂似乎是主要的蠕变机理。但是，有迹象表明，对于最低的测试温度，细微结构的蠕变机理有所改变。形成局部孔以适应与蠕变基质和蠕变过程中主要发生弹性变形的纤维有关的应变差异。对材料进行蠕变前后的微结构分析，以了解其变形机理。