Creep-induced Nonlinear Ultrasonic Change in Nickel-based Super alloy, Inconel 718.

Yutaka ISHII, Kuniaki ISHIHARA,Toshihiro OHTANI,Takayuki SAKAKIBARA, Masayuki KAMAYA, Yutaro OHTA, Keiji KUBUSIRO

The Proceedings of Mechanical Engineering Congress, Japan（2022）

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摘要

We investigated the evolutions of nonlinear acoustic characterization: three-wave mixing, with electromagnetic acoustic resonance (EMAR) throughout the creep life in Nickel-based superalloy, Inconel 718, which has high temperature strength effected by γ″(Ni3Nb) phase at approximately 973 K and is determined that the γ″phase disappearance lead to the creep rupture. EMAR was a combination of the resonant acoustic technique with a non-contact electromagnetic acoustic transducer (EMAT).

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关键词

nonlinear ultrasonic change,super alloy,creep-induced,nickel-based

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