IMR OpenIR
Anisotropy of Elasticity of a Ni Base Single Crystal Superalloy
Liu Jinlai; Ye Lihua; Zhou Yizhou; Li Jinguo; Sun Xiaofeng
Corresponding AuthorLiu Jinlai(jlliu@imr.ac.cn)
2020-06-01
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume56Issue:6Pages:855-862
AbstractThe anisotropy of elasticity of single crystal superalloy is essential to understand its mechanical behavior, e.g. calculating the vibration frequency of turbine blade and avoiding resonance during operation. However, it's difficult to calculate the stiffness constants of single crystal superalloy by theory methods. In this work, one simple experimental method is employed to determine the stiffness constants. The slabs of a first generation single crystal superalloy in two orientations < 001 > < 100 > and < 011 > < 110 > are employed to measure the Young's modulus and shear modulus of this alloy. The Young's modulus and shear modulus of the first specimen and the shear modulus of the second specimen are measured by resonance method from room temperature to 1100 degrees C. The three stiffness constants C-11, C-12, and C-44, of this superalloy are calculated from the measured moduli. The Young's modulus and shear modulus in any orientation can be calculated based on the stiffness constants. Further, the 3D distribution map of Young's modulus and maximum and minimum of shear modulus related to primary orientation can be drawn, so the distribution feature of modulus in 3D space can be acquired conveniently. When the primary orientations are along < 001 > and < 111 >, the shear modulus in plane is isotropy with secondary orientation. When the primary orientation is along < 011 >, the shear modulus demonstrates significant anisotropy with secondary orientation, the shear modulus reaches minimum with secondary orientation < 110 > while the maximum is obtained in secondary orientation < 100 >.
Keywordsingle crystal superalloy stiffness constant anisotropy modulus crystal orientation
Funding OrganizationNational Science and Technology Major Project ; National Key Research and Development Program of China ; National Natural Science Foundation of China
DOI10.11900/0412.1961.2019.00355
Indexed BySCI
Language英语
Funding ProjectNational Science and Technology Major Project[2017-VI-0002-0072] ; National Key Research and Development Program of China[2017YFA0700704] ; National Natural Science Foundation of China[51971214]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000546975500006
PublisherSCIENCE PRESS
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Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/139620
Collection中国科学院金属研究所
Corresponding AuthorLiu Jinlai
AffiliationChinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Liu Jinlai,Ye Lihua,Zhou Yizhou,et al. Anisotropy of Elasticity of a Ni Base Single Crystal Superalloy[J]. ACTA METALLURGICA SINICA,2020,56(6):855-862.
APA Liu Jinlai,Ye Lihua,Zhou Yizhou,Li Jinguo,&Sun Xiaofeng.(2020).Anisotropy of Elasticity of a Ni Base Single Crystal Superalloy.ACTA METALLURGICA SINICA,56(6),855-862.
MLA Liu Jinlai,et al."Anisotropy of Elasticity of a Ni Base Single Crystal Superalloy".ACTA METALLURGICA SINICA 56.6(2020):855-862.
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