论文部分内容阅读
研究了B2结构Fe3Al单晶室温下的力学行为，结果发现，依取向不同，材料的屈服强度、延伸率、加工硬化率存在很大差异近[110]取向具有最高延伸率为42％，而近[100]取向只获得了14．1％的延伸率近[110]取向具有的高加工硬化率是位错交互作用的结果，二分位错分解为单根位错导致交滑移、进一步提高延伸率近[211]取向的低加工硬化率是单系滑移的结果，在此取向下直至断裂，样品中仍为二分位错.
The mechanical behavior of the B2 structure Fe3Al single crystal at room temperature was studied. It was found that the yield strength, elongation and work hardening rate of the material were greatly different depending on the orientation. The maximum elongation of the Fe3Al single crystal was nearly 42% [100] orientation achieves only an elongation of 14.1% [110] The high work hardening rate of orientation is the result of dislocation interaction, dislocations disintegrate into single dislocations resulting in cross-slip and further extension of extension The low work-hardening rate near [211] orientation is the result of single-line slip and remains dislocated in the sample until fracture under this orientation.