Creep/fatigue accelerated failure of Ni-based superalloy turbine blade: Microscopic characteristics and void migration mechanism

Lei Han, Peiyuan Li, Shengjie Yu, Cao Chen, Chengwei Fei, Cheng Lu

科研成果: 期刊稿件文章同行评审

55 引用 (Scopus)

摘要

Creep/fatigue accelerated failures of K403 superalloy turbine blades are inspected, and the damage behaviors are revealed and failure modes are determined in laboratory. It is concluded that: (1) significant discrepancies of fractographies and cross-sectional microstructures are interpreted by qualitative and quantitative investigations; (2) the observed morphologies are mainly attributed to the dendrite separation and γ' phase rafting behaviors, together with the development of ‘void migration mechanism’, i.e., grain interior → grain boundary → sub grain boundary; (3) the failure of turbine blade changes from the mixed to the intergranular mode, which is essentially controlled by the contribution proportion of creep damage and fatigue damage.

源语言英语
文章编号106558
期刊International Journal of Fatigue
154
DOI
出版状态已出版 - 1月 2022
已对外发布

指纹

探究 'Creep/fatigue accelerated failure of Ni-based superalloy turbine blade: Microscopic characteristics and void migration mechanism' 的科研主题。它们共同构成独一无二的指纹。

引用此