The results show that the decarbonization of Si Mn bearing spring steel mainly occurs both in the heating process prior to rolling and in the cooling process after rolling.

结果表明：硅锰弹钢脱碳主要发生在轧前加热过程中，轧后冷却也发生脱碳。

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The SM master alloy was used to add high oxygen affinity elements Mn and si into the sintered steel as alloying elements to improve the mechanical properties.

通过添加硅锰母合金，将硅、锰这两种对氧亲和力较高的元素加入到烧结钢中，以改善烧结钢的力学性能。

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Through observation and analysis of metal organism after explosive load experiments, fracture mechanisms of the mild steel and Si-Mn steel materias were specially studied.

通过爆炸加载试验观察分析其金相组织，研究低碳钢和硅锰钢材料的裂纹生成、扩展和断裂机制。

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