Dislocation Configurations and Stress Distribution Along the Transverse Axis of Turbine Blade Body

Xianzi Lv; Fei Sun; Jinyan Tong; Shu Zhang; Qiang Feng; Jianxin Zhang

doi:10.1007/s11665-015-1774-9

Dislocation Configurations and Stress Distribution Along the Transverse Axis of Turbine Blade Body

Xianzi Lv, Fei Sun, Jinyan Tong, Shu Zhang, Qiang Feng, Jianxin Zhang

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

The characteristics of microstructural evolution along the transverse axis of the 1/3 position of turbine blade body have been investigated with the help of transmission electron microscopy. Dislocation configurations change with the evolution of local stress from the leading edge to the trailing edge: slip bands → dislocations → only γ/γ′ structure → dislocations → slip bands. The formation mechanism of slip bands illustrates that dislocations are generated in pairs and glide on the same plane continuously. Finite element analysis is made to assess the stress distribution along the transverse axis of turbine blade body. The instantaneous and inhomogeneous stress at the leading and trailing edges of blade body becomes the driving force for the formation of slip bands.

Original language	English
Pages (from-to)	4620-4625
Number of pages	6
Journal	Journal of Materials Engineering and Performance
Volume	24
Issue number	12
DOIs	https://doi.org/10.1007/s11665-015-1774-9
Publication status	Published - 2015 Dec 1
Externally published	Yes

Keywords

dislocation
slip band
stress
superalloy

ASJC Scopus subject areas

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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abstract = "The characteristics of microstructural evolution along the transverse axis of the 1/3 position of turbine blade body have been investigated with the help of transmission electron microscopy. Dislocation configurations change with the evolution of local stress from the leading edge to the trailing edge: slip bands → dislocations → only γ/γ′ structure → dislocations → slip bands. The formation mechanism of slip bands illustrates that dislocations are generated in pairs and glide on the same plane continuously. Finite element analysis is made to assess the stress distribution along the transverse axis of turbine blade body. The instantaneous and inhomogeneous stress at the leading and trailing edges of blade body becomes the driving force for the formation of slip bands.",

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AU - Lv, Xianzi

AU - Sun, Fei

AU - Tong, Jinyan

AU - Zhang, Shu

AU - Feng, Qiang

AU - Zhang, Jianxin

PY - 2015/12/1

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AB - The characteristics of microstructural evolution along the transverse axis of the 1/3 position of turbine blade body have been investigated with the help of transmission electron microscopy. Dislocation configurations change with the evolution of local stress from the leading edge to the trailing edge: slip bands → dislocations → only γ/γ′ structure → dislocations → slip bands. The formation mechanism of slip bands illustrates that dislocations are generated in pairs and glide on the same plane continuously. Finite element analysis is made to assess the stress distribution along the transverse axis of turbine blade body. The instantaneous and inhomogeneous stress at the leading and trailing edges of blade body becomes the driving force for the formation of slip bands.

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KW - stress

KW - superalloy

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