孙焕焕,刘爱国,孟凡玲

• 1:沈阳理工大学材料科学与工程学院

摘要(Abstract)：

针对20G锅炉膜式水冷壁防护要求,采用MIG焊技术在水冷壁表面堆焊Inconel 625合金,研究堆焊层组织、相组成、化学成分,测试堆焊水冷壁的力学性能。结果表明,堆焊层组织为奥氏体树枝晶;堆焊层与20G基体形成致密的冶金结合;Ni、Cr、Mo、Fe是组成是堆焊层的主要元素;堆焊层的硬度高于基体;堆焊了Inconel 625的锅炉水冷壁抗拉强度509 MPa,常温下冲击功45 J,Inconel 625强化了20G基体,并赋予基体更高的韧性。

关键词(KeyWords)： 锅炉水冷壁;Inconel 625合金;堆焊;组织;性能

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 孙焕焕,刘爱国,孟凡玲

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