在FeCrAl中,除了裂纹尖端原子发生相变,基体中由于受到Cr和Al原子等杂质对晶格的影响,易于位错成核,产生了大量细小的滑移线,在裂纹扩展过程中不断受到阻碍发生转向,并使两侧滑移线被断裂面所吸收。
As the temperature rises, the lattice constant of FeCrAl increases due to the intensification of the thermal motion of the molecule, and the relationship between the thermal expansion coefficient and temperature is deduced based on its relationship with temperature.