IMR OpenIR
Investigations on cyclic deformation behaviors and corresponding failure modes of a Ni-Based superalloy
Kong, Wei-Wen1,2; Yuan, Chao1; Zhang, Bao-Ning1
Corresponding AuthorYuan, Chao(ychao@imr.ac.cn)
2020-07-22
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
Volume791Pages:12
AbstractHigh cycle fatigue properties with different stress levels were performed on GH4742 alloy at room temperature (RT) and 750 degrees C by staircase method. Comparative analyses of failure mode were made at the two different temperatures. The results show that failure mode changes gradually from surface defects failure to interior crystallographic facets failure with increasing temperature. Meanwhile, at 750 degrees C, the majority of specimens present crystallographic facets failure, while only three of initiations with higher stress level are associated with surface inclusions. The reasons for surface defects initiations are related to local stress concentration under lower temperatures or higher stress levels. The effects of competing failure modes on fatigue properties, including fatigue life and fatigue damage rate, were discussed in detail, which is consistent with the results fitted by Basquin relationship. Transmission Electron Microscope observation reveals that gamma' particles are sheared by dislocations at RT, whereas at 750 degrees C, climbing, bypassing and shearing mechanisms operate simultaneously, which is due to the higher thermal activation energy and stacking fault energy at 750 degrees C.
KeywordSuperalloy High cycle fatigue Failure mode Dislocation structure Fatigue life
Funding OrganizationNational Science and Technology Major Project
DOI10.1016/j.msea.2020.139775
Indexed BySCI
Language英语
Funding ProjectNational Science and Technology Major Project[2017-VI-0018-0090]
WOS Research AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000551484000040
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/139970
Collection中国科学院金属研究所
Corresponding AuthorYuan, Chao
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Kong, Wei-Wen,Yuan, Chao,Zhang, Bao-Ning. Investigations on cyclic deformation behaviors and corresponding failure modes of a Ni-Based superalloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2020,791:12.
APA Kong, Wei-Wen,Yuan, Chao,&Zhang, Bao-Ning.(2020).Investigations on cyclic deformation behaviors and corresponding failure modes of a Ni-Based superalloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,791,12.
MLA Kong, Wei-Wen,et al."Investigations on cyclic deformation behaviors and corresponding failure modes of a Ni-Based superalloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 791(2020):12.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Kong, Wei-Wen]'s Articles
[Yuan, Chao]'s Articles
[Zhang, Bao-Ning]'s Articles
Baidu academic
Similar articles in Baidu academic
[Kong, Wei-Wen]'s Articles
[Yuan, Chao]'s Articles
[Zhang, Bao-Ning]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Kong, Wei-Wen]'s Articles
[Yuan, Chao]'s Articles
[Zhang, Bao-Ning]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.