陈国宏,余新海,王家庆,化建,刘俊建,宋有明,张涛,张建华,汤文明

• 1:安徽省电力科学研究院材料所
• 2:合肥津利能源科技发展有限公司
• 3:合肥工业大学材料科学与工程学院

摘要(Abstract)：

对ERNiCrMo-3镍基焊丝钨极氩弧焊(GTAW)焊接的T92/HR3C异种钢管接头,进行650℃直至1143.5 h的高温时效处理,研究时效过程中接头显微组织结构和力学性能的变化规律。结果表明:时效后接头的室温拉伸断口都位于T92母材。随时效时间的延长,接头各区域的冲击韧性单调降低,但接头强度、T92侧热影响区(HAZ)及母材的硬度先降后升,时效501.1 h后趋于稳定,这归因于不同时效时间下T92侧HAZ及母材中碳化物的形态及聚集状态的差异。HR3C侧HAZ产生时效脆化,其冲击断口呈沿晶断裂的断口特征。

关键词(KeyWords)： 异种钢焊接;高温时效;组织结构;力学性能

Abstract:

Keywords:

基金项目(Foundation): 安徽省电力科学研究院技术开发基金(2009咨-JS-03);; 安徽省高校自然科学研究重点项目(KJ2011A221)

作者(Author): 陈国宏,余新海,王家庆,化建,刘俊建,宋有明,张涛,张建华,汤文明

DOI: 10.13289/j.issn.1009-6264.2011.09.014

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