The inhibiting effect of Re-rich layer on the interdiffusion between NiAl and Ni3Al-based superalloy and its degradation

Funding Agencies|Science Center for Gas Turbine Project [P2021 -A -IV-002-002]; National Science and Technology Major Projects [2017-VI-0010-0 081, 2017 -VII-0007-0100]; Fundamental Research Funds for Central Universities [YWF-22-L-1033]; Fundamental Research Funds for Central Universities [YWF-22-L-1033]; Youth Talent Support Program of Beihang University
A NiAl alloy/ Ni3Al-based superalloy diffusion couple with an electroplated NiRe layer was prepared. High-temperature interdiffusion performance of the diffusion couple was analyzed at 1100 degrees C under argon at-mosphere and compared with that of the blank group without NiRe layer. A Re-based diffusion barrier formed during the diffusion. The microstructural instability of the superalloy was found to be alleviated by the Re-based diffusion barrier, and the detailed microstructure of the diffusion barrier was identified to be Re-rich a phases and Mo-rich << phase detected by TEM. The chemical diffusion coefficient of Al was reduced by about two orders of magnitude with the modification of the Re-based diffusion barrier. A microstructural degradation of the Re-based barrier layer was observed after high-temperature diffusion of 300 h, which can be attributed to the internal diffusion of Mo.(c) 2023 Elsevier B.V. All rights reserved.

Wu, YutingBeihang Hangzhou Innovat Inst Yuhang, Peoples R China (författare)
Liu, LiangBeihang Univ BUAA, Peoples R China (författare)
Peng, RuLinköpings universitet,Konstruktionsmaterial,Tekniska fakulteten(Swepub:liu)rupe37 (författare)
Xu, JinghaoLinköpings universitet,Konstruktionsmaterial,Tekniska fakulteten(Swepub:liu)jinxu03 (författare)
He, JianBeihang Univ BUAA, Peoples R China; Beihang Univ BUAA, Peoples R China; Beihang Hangzhou Innovat Inst Yuhang, Peoples R China (författare)
Guo, HongboBeihang Univ BUAA, Peoples R China; Beihang Univ BUAA, Peoples R China; Beihang Univ BUAA, Peoples R China (författare)
Beihang Univ BUAA, Peoples R ChinaBeihang Hangzhou Innovat Inst Yuhang, Peoples R China (creator_code:org_t)

Ingår i:Journal of Alloys and Compounds: ELSEVIER SCIENCE SA9570925-83881873-4669

Av författaren/redakt...: Li, Jingchen; Wu, Yuting; Liu, Liang; Peng, Ru; Xu, Jinghao; He, Jian; visa fler...; Guo, Hongbo; visa färre...

Om ämnet

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Materialteknik; och Metallurgi och m ...

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.