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    高碳钢是指w(C)高于0.6%的碳钢,它比中碳钢具有更大的淬硬倾向,并形成高碳马氏体,对冷裂纹的形成更为敏感。同时,焊接热影响区内形成的马氏体组织,性能硬而脆,导致接头的塑性和韧性大大下降,因此高碳钢的焊接性相当差,必须采取特殊的焊接工艺,才能保证接头的性能。

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高碳钢的焊接缺陷及防止措施

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