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采用加铝定氮的方法,稳定地控制了钢中酸溶硼的含量。分析了中碳硅锰钢调质处理前的轧制状态、不同的热处理或热加工对调质处理后钢中硼的分布及冲击性能的影响。结果表明,不同的热加工历程,对调质处理后钢中硼碳化物在晶界的偏聚析出和钢的冲击性能都有不同程度的影响。说明为提高硼在钢中的均匀化程度,一方面要在工艺许可的范围内选择较高的热加工温度,另一方面油冷等淬火快冷方式能够避免硼碳化物的沿晶偏聚析出。
The method of adding aluminum nitrogen, stably control the acid content of boron in steel. The effects of different heat treatment or hot working on the distribution and impact properties of boron in quenched and tempered steel were analyzed. The results show that the different thermal processing courses have different degrees of impact on the segregation and precipitation of boron carbides in the grain boundaries and the impact properties of steel after quenched and tempered steel. Description To improve the degree of homogenization of boron in the steel, on the one hand to the process within the scope of the permit to choose a higher temperature, on the other hand quenching and oil quenching fast cooling method can avoid Boron carbide segregation along the crystal .