Analysis and observation under electron microscope indicated that it seems to attribute the notch sensitivity of the alloy to the film-like boride along the grain boundaries substantially.
电子显微镜观察与分析表明，晶界上的薄膜状硼化物是导致合金缺口敏感的主要原因。
2
Bud film contract and leaf long, lozenge or wedge, have notch shape a tooth-like part of anything.