肖将楚,张麦仓,彭以超,董建新

• 1:北京科技大学材料科学与工程学院

摘要(Abstract)：

利用光学金相、扫描电镜、电子探针等手段对制氢转化炉Incoloy800H管材服役后的组织损伤特征进行分析,并借助弹塑性有限元法分析了管材服役过程温差应力与管材开裂的关联性。结果表明,Incoloy800H管材在服役过程中发生了晶界氧化、晶间腐蚀及元素偏聚现象,管材内壁附近出现3个区域(氧化区,贫碳化物区,碳化物区),其中贫碳化物区深度可达100μm;服役过程贫碳化物区晶界抗蠕变能力的下降及服役过程中管材内壁周向温差应力的综合影响导致Incoloy800H管材服役过程裂纹的萌生及扩展。

关键词(KeyWords)： Incoloy800H合金;组织;损伤;温差应力;开裂

Abstract:

Keywords:

基金项目(Foundation): 国家高技术研究发展计划“863”计划(2012AA03A513)

作者(Author): 肖将楚,张麦仓,彭以超,董建新

DOI: 10.13289/j.issn.1009-6264.2015.04.021

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