王延锟,刘子昀,马庆爽,张海莲,贺翔,李会军,高秋志

• 1:东北大学秦皇岛分校资源与材料学院
• 2:轧制技术及连轧自动化国家重点实验室东北大学
• 3:秦皇岛市道天高科技有限公司
• 4:天津大学材料科学与工程学院

摘要(Abstract)：

Ⅳ型蠕变断裂是焊接接头细晶区在高温、低应力下发生的沿晶脆性断裂,对高Cr马氏体耐热钢焊接接头的高温蠕变性能具有重要影响。本文详细分析了Ⅳ型蠕变断裂过程中的组织转变、断裂机理以及接头的组织变化、多轴应力状态和焊接残余应力对其蠕变性能的影响,并提出了相应的控制措施。同时对现阶段关于高Cr马氏体耐热钢焊接接头Ⅳ型蠕变断裂的研究中存在的问题及盲点进行了分析与概括。

关键词(KeyWords)： 马氏体耐热钢;蠕变断裂;焊接接头

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金钢铁联合研究基金重点项目(U1960204);国家自然科学基金面上项目(51871042);; 中央高校基本科研业务费(N2023026)

作者(Author): 王延锟,刘子昀,马庆爽,张海莲,贺翔,李会军,高秋志

DOI: 10.13289/j.issn.1009-6264.2021-0195

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