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分析了钢中二相粒子各种作用机制以及这些作用与二相粒子形状之间的关系。根据球、六面体、长棒等钢中常见几何形状的二相粒子的比表面积、平均投影面积,定量或半定量地计算了由于形状的差异造成的二相粒子各种作用在程度上的差别。结果表明:在其他物理、化学条件相同的情况下,无论是位错钉扎、还是氢陷阱作用,球形粒子的作用效率最低。在没有形状因子修正的条件下,利用二相粒子等积球计算将低估二相粒子的实际作用。
The mechanism of action of two phase particles in steel and the relationship between these effects and the shape of two phase particles were analyzed. According to the specific surface area and the average projected area of two-phase particles with common geometric shape in steel such as sphere, hexahedron, and long rod, the difference in degree of action of two-phase particles due to shape difference is quantitatively or semi-quantitatively calculated. The results show that spherical particles have the lowest efficiency in the same physical and chemical conditions, no matter whether they are pinned by dislocation or hydrogen traps. In the absence of shape factor correction conditions, the use of two-phase particle isometry will underestimate the actual role of two-phase particles.