Abstract The large heat input welding performance of shipbuilding steel could be improved effectively by Mg treated in steelmaking process, but the mechanism of Mg on the nano-scale pinned particles had not been figured out yet, and this is also the bottleneck for Mg oxide metallurgy developing. In this research, with Mg-treated shipbuilding steel produced by industrial trials, the systematic experiments and theoretical analysis of thermodynamics and crystallography had been done. The results showed that, with increased welding energy, as the core pinned particles, the quantity of particles between 40 nm and 120 nm was stable when the welding energy was

中文翻译：

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镁处理造船钢焊接热影响区钉扎粒子演化机制研究

摘要 炼钢过程中镁的处理可以有效提高船舶钢的大热输入焊接性能，但镁在纳米级钉扎颗粒上的作用机制尚未弄清楚，这也是镁氧化物冶金的瓶颈。发展。本研究以工业试验生产的镁处理造船用钢为材料，对热力学和晶体学进行了系统的实验和理论分析。结果表明，随着焊接能量的增加，作为核心钉扎粒子，焊接能量为40～120nm的粒子数量稳定。