Effects of the Cross-Sectional In-Plane Crystal Orientation on the Structural Strength of Single-Crystal Turbine Vanes

Jinxiang CHEN; Ryosaku HASHIMOTO; Yoshitaka FUKUYAMA; Masahiro MATSUSHITA; Makoto OSAWA; Hiroshi HARADA; Tadaharu YOKOKAWA; Toyoaki YOSHIDA

doi:10.2472/jsms.55.432

Original Papers

Effects of the Cross-Sectional In-Plane Crystal Orientation on the Structural Strength of Single-Crystal Turbine Vanes

Jinxiang CHEN, Ryosaku HASHIMOTO, Yoshitaka FUKUYAMA, Masahiro MATSUSHITA, Makoto OSAWA, Hiroshi HARADA, Tadaharu YOKOKAWA, Toyoaki YOSHIDA

Author information

Jinxiang CHEN
Aeronautical Envi. Tech. Center, Japan Aerospace Exploration Agency
Ryosaku HASHIMOTO
Aeronautical Envi. Tech. Center, Japan Aerospace Exploration Agency
Yoshitaka FUKUYAMA
Aeronautical Envi. Tech. Center, Japan Aerospace Exploration Agency
Masahiro MATSUSHITA
Aeronautical Envi. Tech. Center, Japan Aerospace Exploration Agency
Makoto OSAWA
Materials Eng. Lab., High Temperature Materials Group, National Inst. for Materials Sci.
Hiroshi HARADA
Materials Eng. Lab., High Temperature Materials Group, National Inst. for Materials Sci.
Tadaharu YOKOKAWA
Materials Eng. Lab., High Temperature Materials Group, National Inst. for Materials Sci.
Toyoaki YOSHIDA
Dept. of Mech. Systems Eng., Graduate School of Tech., Tokyo Univ. of Agriculture and Tech.

Keywords: Anisotropy, Thermal Stress, Creep, Single-Crystal, TMS-75, Orientation, Von Mises Stress

JOURNAL FREE ACCESS

2006 Volume 55 Issue 4 Pages 432-437

DOI https://doi.org/10.2472/jsms.55.432

Details

Abstract

This paper presents the effects of the cross-sectional in-plane crystal orientation (θ) on the structural strength of single crystal turbine vanes using the finite element method (FEM). The material of the turbine vanes is the single crystal superalloy TMS-75. The obtained results show that the elastic constant matrix (c'₄₄) changes were by above 60% due to the orientation variation (0° < θ < 90°). The dependency of the structural strength of the turbine vane on the crystal orientation was calculated using von Mises stress equation. The strength of the turbine vane was strongly related to θ, and also related to the model shape and load. This influence becomes more significant near the leading edge of the turbine vane where it is most likely to fracture.

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