For the difference of ship steel low temperature impact value, the effects of chemical composition, inclusion and microstructure of the refined and unrefined steel are analyzed.
针对精炼与非精炼船钢低温冲击值的差异，分析了两种钢的化学成分、夹杂物和显微组织等对冲击值的影响。
However, large grain size and continuous grain boundaries combine to produce stress concentrations, thus lowering the plasticity and impact value of alloy after solution and aging treatment.
而粗大的晶粒及连续的晶界容易产生应力集中，因此合金经固溶时效后具有较低的塑性和冲击值。
Impact value is one of the criteria to evaluate material toughness.
冲击值是评价材料韧性的指标之一。
Impact value is one of the criteria to evaluate material toughness.
冲击值是评价材料韧性的指标之一。
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