When boron content surpasses 0.010 %, there is some clear continuous carbide network or discontinuous carbide network in the microstructure, as a result, the impact toughness declines greatly.
当硼含量大于0 . 0 10 %时，铸态组织中出现了明显的网状或断网状碳化物，冲击韧性下降幅度较大。
When boron content surpasses 0.010 %, there is some clear continuous carbide network or discontinuous carbide network in the microstructure, as a result, the impact toughness declines greatly.
当硼含量大于0 . 0 10 %时，铸态组织中出现了明显的网状或断网状碳化物，冲击韧性下降幅度较大。
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