张建斌,刘帆,樊丁,郑泽宇

• 1:兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室

摘要(Abstract)：

采用光学显微镜、显微硬度计和扫描电镜等分析方法研究了P91钢接头组织中δ-铁素体形态、分布和含量对其冲击韧性的影响。结果表明,随着热输入的增加δ-铁素体含量先增多随后趋于稳定;δ-铁素体分布不均匀,呈多边形分布于热影响区,以及少量呈条状分布于焊缝;δ-铁素体含量对冲击韧性有显著影响,随着δ-铁素体含量增多,接头的冲击韧性下降;冲击断口形貌从韧/脆混合断裂转变为脆性断裂。

关键词(KeyWords)： 耐热钢;热输入;δ-铁素体;冲击韧性

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 张建斌,刘帆,樊丁,郑泽宇

DOI: 10.13289/j.issn.1009-6264.2017.03.017

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