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MICROSTRUCTURE EVOLUTION AND FEM ANALYSIS OF 111 ORIENTED SINGLE CRYSTAL OF A NICKEL-BASED SUPERALLOY DURING TENSILE CREEP
Alternative TitleMICROSTRUCTURE EVOLUTION AND FEM ANALYSIS OF111ORIENTED SINGLE CRYSTAL OF A NICKELBASED SUPERALLOY DURING TENSILE CREEP
Zhang Shu1; Tian Sugui1; Yu Huichen3; Yu Lili1; Yu Xingfu1
2012
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume48Issue:5Pages:561-568
AbstractThe distribution of von Mises stress and strain energy density in regions near interfaces of gamma/gamma' phases was calculated by an elastic-plastic stress-strain finite element method (FEM), and the influences of applied stress on the von Mises stress distribution and coarsening regularity of gamma' phase in a 111 oriented single crystal nickel-based superalloy were also investigated. The results show that, after heat treated, the microstructure of the 111 oriented single crystal superalloy consists of a cubical gamma' phase embedded coherently in gamma matrix, and the cubical gamma' phase is regularly arranged along direction. When tensile stress is applied along 111 direction, compared to (010)(gamma') plane, larger expanding lattice strain occurs on (100)(gamma') and (001)(gamma') planes under the action of principal stress component, which may trap Al, Ti atoms with bigger radius to promote gamma' phase directionally growing along 010 and 100 orientations on (010) plane, this is thought to be the main reason of gamma' phase grown directionally into a mesh-like rafted structure along (010) plane.
KeywordHIGH-VOLUME FRACTION UNIAXIAL STRESS GAMMA PHASE MORPHOLOGY 111 orientation single crystal nickel-based superalloy microstructure evolution creep FEM analysis
Indexed ByCSCD
Language英语
CSCD IDCSCD:4535434
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Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/148860
Collection中国科学院金属研究所
Affiliation1.中国科学院金属研究所
2.沈阳大学
3.Beijing Institute Aeronaut Mat, Beijing 100095, Peoples R China
Recommended Citation
GB/T 7714
Zhang Shu,Tian Sugui,Yu Huichen,et al. MICROSTRUCTURE EVOLUTION AND FEM ANALYSIS OF 111 ORIENTED SINGLE CRYSTAL OF A NICKEL-BASED SUPERALLOY DURING TENSILE CREEP[J]. ACTA METALLURGICA SINICA,2012,48(5):561-568.
APA Zhang Shu,Tian Sugui,Yu Huichen,Yu Lili,&Yu Xingfu.(2012).MICROSTRUCTURE EVOLUTION AND FEM ANALYSIS OF 111 ORIENTED SINGLE CRYSTAL OF A NICKEL-BASED SUPERALLOY DURING TENSILE CREEP.ACTA METALLURGICA SINICA,48(5),561-568.
MLA Zhang Shu,et al."MICROSTRUCTURE EVOLUTION AND FEM ANALYSIS OF 111 ORIENTED SINGLE CRYSTAL OF A NICKEL-BASED SUPERALLOY DURING TENSILE CREEP".ACTA METALLURGICA SINICA 48.5(2012):561-568.
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