崔宇飞,朱丽慧,周任远,卢征然,陈亮

• 1:上海大学材料科学与工程学院
• 2:上海锅炉厂有限公司

摘要(Abstract)：

将Inconel 617B焊接接头试样及其焊后热处理试样在750℃下时效1000~5000 h,通过对比室温拉伸强度、硬度以及冲击韧性,采用扫描电镜、透射电镜分析两组试样的析出相,探讨焊后热处理对Inconel 617B时效性能的影响及机理。结果表明:时效前,焊后热处理试样母材区有析出相,焊缝区析出相数量略有增加。焊后热处理使Inconel 617B的强度、硬度升高,冲击韧性降低;时效后,焊后热处理试样析出相尺寸更大,随时效时间延长,两组试样析出相的尺寸区别逐渐减少。因此焊后热处理试样长时时效后的强度、硬度逐渐低于原始焊接接头试样,冲击韧性差值减少。

关键词(KeyWords)： 先进超超临界机组;Inconel 617B;焊后热处理;时效性能;析出相

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划(2016YFC0801904)

作者(Author): 崔宇飞,朱丽慧,周任远,卢征然,陈亮

DOI: 10.13289/j.issn.1009-6264.2017-0118

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