通过药皮过渡合金元素,设计了四种碱性焊条,并利用焊接试验、金相分析、力学性能及断口扫描测试等方法,研究了药皮中合金元素对碱性焊条焊缝组织及性能的影响.结果表明,随着药皮合金元素含量的升高:试样焊缝组织相变化不大,均以回火索氏体和板条马氏体为主,并伴有少量的残余奥氏体和二次析出相,但组织逐渐由板条状变为细条状,且交错密度增大;焊缝强度变化不大,但冲击韧性大幅度提高,冲击断口的韧窝变得多而深；药皮中合金元素对焊缝组织及性能的影响是一个相辅相成又相互制约的过程,3#焊条合金配比使得碱性焊条焊缝组织和强韧性达到了较好的匹配.
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