The Influence of Crystal Orientation on Vibration Characteristics of DD6 Nickel-Base Single Crystal superalloy Turbine Blade

• Published in: Journal of materials engineering and performance Vol. 23; no. 2; pp. 372 - 377
• Main Authors: Wen, Zhixun, Mao, Huanze, Yue, Zhufeng, Wang, Baizhi
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.02.2014; Springer
• Subjects: Applied sciences; Characterization and Evaluation of Materials; Chemistry and Materials Science; Corrosion and Coatings; Engineering Design; Exact sciences and technology; Materials Science; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology; Metals. Metallurgy; Other mechanical properties; Quality Control; Reliability; Safety and Risk; Tribology; turbine blade; finite element method; Crystal orientation; vibration; Finite element method; Nickel base alloys; Superalloy; Angular variation; Turbine blade; Frequency measurement; Mechanical vibrations; Modeling; Single crystal
• ISSN: 1059-9495; 1544-1024
• DOI: 10.1007/s11665-013-0772-z

Modeling of a nickel-base single crystal superalloy turbine blade which accounts for material orthotropy is carried out to investigate the influence of axial direction and randomness crystallographic orientation on the dynamic natural frequency. In this paper, the natural frequency of the blade is calculated by the finite element method based on the commercial software ABAQUS. The results show that the deviation of the axial directions has a significant effect on the lower frequency as well as on the higher frequency, while the randomness in crystallographic orientations has a great impact only on higher order frequency. It is necessary to take the crystal orientation into account as an optimized factor and the variation of the vibration characteristics can be predicted.