scholarly journals Determination of the Factors Controlling Crystallography Non-Conformance in Single Crystal Turbine Blade Production on an Industrial Scale

2007 ◽  
pp. 695-700
Author(s):  
J. Cameron ◽  
P.W. Shelton
Keyword(s):  
Single Crystal ◽  
Turbine Blade ◽  
Industrial Scale ◽  
Single Crystal Turbine Blade ◽  
Blade Production

scholarly journals Determination of the Factors Controlling Crystallography Non-Conformance in Single Crystal Turbine Blade Production on an Industrial Scale

2007 ◽  
Vol 558-559 ◽  
pp. 695-700
Author(s):  
J. Cameron ◽  
P.W. Shelton
Keyword(s):  
Single Crystal ◽  
Physical And Mechanical Properties ◽  
Structure Design ◽  
Grain Structure ◽  
Industrial Scale ◽  
Optimum Process ◽  
Production Volume ◽  
Single Crystal Turbine Blade ◽  
High Production Volume ◽  
Input Variables

The arduous conditions to which hot section turbine components are subjected in service, dictate the superior physical and mechanical properties demanded of them. The demand for both high temperature and creep resistance, and anisotropic property requirements of the components has lead to developments in alloy composition, component geometry and single, oriented grain structure design. The slim tolerances and high quality standards imposed on such design features, combined with the high production volume in industry means that component non-conformances to the customer specifications occur. The input variables contributing to crystallography non-conformance in single crystal production have been investigated with a view to defining optimum process parameters for the successful manufacture of single crystal investment cast components on an industrial scale.

The Analysis of Contact Fatigue Behavior in Ni-Base Single Crystal Superalloy Turbine Blade Rabbet

2014 ◽  
Vol 633-634 ◽  
pp. 1104-1110
Author(s):  
Guo Cai Zhou ◽  
Hai Qing Pei
Keyword(s):  
Shear Stress ◽  
Single Crystal ◽  
Turbine Blade ◽  
Contact Area ◽  
Fatigue Behavior ◽  
Stress Gradient ◽  
Contact Fatigue ◽  
Tooth Contact ◽  
Rate Dependent ◽  
Single Crystal Turbine Blade

Based on the dislocation pile-up theory and the crystal plastic theory, a rate-dependent crystallographic plastic finite element method (FEM) was used to analyze the stress distribution in the contact zone of single crystal turbine blade rabbet. The FEM results show that the maximum stress and the maximum resolved shear stress location are in the upper edge of the first tooth contact area of the rabbet. The surface crack initiates in the edge and grows as the zigzag wave. The deflected angle of the plane defined by maximum resolved shear stress gradient direction and the upper edge of the first tooth contact area of the rabbet with respect to the Z axis is 35°. The fracture occurs along the {-1-11} plane. Fracture behavior of rabbet/groove modeling specimens made of nickel-based single crystal superalloys was studied by corresponding contact fatigue experiments. The initial place and developing direction of the fatigue crack observed from experiments are found to be in good agreement with the predicted results based FEM.

scholarly journals Development of advanced columnar and single crystal turbine blade.

1990 ◽  
Vol 29 (4) ◽  
pp. 259-261
Author(s):  
Y. Ohta ◽  
Y. Nakagawa ◽  
H. Honda ◽  
S. Ohama ◽  
A. Ohtomo
Keyword(s):  
Single Crystal ◽  
Turbine Blade ◽  
Single Crystal Turbine Blade

Modeling of Unidirectional Growth in a Single Crystal Turbine Blade Casting

2006 ◽  
pp. 111-116
Author(s):  
Qing Yan Xu ◽  
Bai Cheng Liu ◽  
Zuo Jian Liang ◽  
Jia Rong Li ◽  
Shi Zhong Liu ◽  
...  
Keyword(s):  
Single Crystal ◽  
Turbine Blade ◽  
Single Crystal Turbine Blade ◽  
Blade Casting
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