李兆登,林健,陆永浩,曹鑫源

• 1:北京科技大学国家材料服役安全科学中心

摘要(Abstract)：

采用激光焊接技术对国产核级不锈钢进行焊接,通过显微组织分析和点腐蚀试验,研究不同热处理温度和时间对焊缝组织和点蚀性能的影响规律和机制。结果表明:原始焊缝中残留着大量板条状δ-铁素体相,在敏化区间内,提高热处理温度,焊缝中δ-铁素体相细化,含量降低,导致焊接接头抗点蚀性能降低;同一温度下延长热处理时间,δ-铁素体相含量下降且没有析出相析出,焊接接头抗点蚀性能增强。

关键词(KeyWords)： 激光焊接;热处理;显微组织;点蚀性能

Abstract:

Keywords:

基金项目(Foundation): 国家科技重大专项课题(2011ZX06004-009)

作者(Author): 李兆登,林健,陆永浩,曹鑫源

DOI: 10.13289/j.issn.1009-6264.2014.11.008

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