该技术采用微合金化，利用正交试验设计方法，对不同成分搭配的试样进行宏观硬度和冲击韧性测试，优化了合金成分。
The composition was optimized by tiny alloying, orthogonal test design and the hardness and impact toughness test for the different samples with different combination of alloy composition.
该技术采用微合金化，利用正交试验设计方法，对不同成分搭配的试样进行宏观硬度和冲击韧性测试，优化了合金成分。
The composition was optimized by tiny alloying, orthogonal test design and the hardness and impact toughness test for the different samples with different combination of alloy composition.
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