激光淬火q355b合金钢管材料表面强化的重要方法之一，对 q355b合金钢管材料进行激光淬火处理时，由于激光对材料表面的快速加热和冷却作用，可在其表面获得高碳含量的孪晶马氏体、高位错密度的奥氏体、索氏体和硬质碳化物等具有良好耐磨性能和耐腐蚀性能的组织，从而大幅提高 q355b合金钢管的表面性能。

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