摘要:用钨极氩孤焊方法在A304不锈钢基体上堆焊Fe3Al合金,对其相组成进行了XRD分析,对堆焊试样在750℃和950℃温度下分别进行了Na2SO4盐和NaCl盐的热腐蚀试验。结果表明:堆焊层金属主要由Fe3Al相构成,仅含有少量的α-Fe固溶体;堆焊层金属在NaCl盐中的热腐蚀程度明显高于在Na2SO4盐中的腐蚀,且堆焊层与基体的熔合区是最薄弱的区域。
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