IMR OpenIR
Effect of laser shock on tensile deformation behavior of a single crystal nickel-base superalloy
Lu, G. X.; Liu, J. D.; Qiao, H. C.; Zhou, Y. Z.; Jin, T.; Zhao, J. B.; Sun, X. F.; Hu, Z. Q.; Liu, JD; Jin, T (reprint author), Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
2017-02-16
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
Volume686Pages:46-53
AbstractThis investigation focused on the tensile deformation behavior of a single crystal nickel-base superalloy, both in virgin condition and after laser shock processing (LSP) with varied technology parameters. Nanoindention tests were carried out on the sectioned specimens after LSP treatment to characterize the surface strengthening effect. Stress strain curves of tensile specimens were analyzed, and microstructural observations of the fracture surface and the longitudinal cross-sections of ruptured specimens were performed via scanning electron microscope (SEM), in an effort to clarify the fracture mechanisms. The results show that a surface hardening layer with the thickness of about 0.3-0.6 mm was gained by the experimental alloys after LSP treatment, but the formation of surface hardening layer had not affected the yield strength. Furthermore, fundamental differences in the plastic responses at different temperatures due to LSP treatment had been discovered. At 700 degrees C, the slip deformation was held back when it extended to the surface hardening layer and the ensuing slip steps improved the plasticity; however, at 1000 degrees C, surface hardening layer hindered the macro necking, which resulted in the relatively lower plasticity.; This investigation focused on the tensile deformation behavior of a single crystal nickel-base superalloy, both in virgin condition and after laser shock processing (LSP) with varied technology parameters. Nanoindention tests were carried out on the sectioned specimens after LSP treatment to characterize the surface strengthening effect. Stress strain curves of tensile specimens were analyzed, and microstructural observations of the fracture surface and the longitudinal cross-sections of ruptured specimens were performed via scanning electron microscope (SEM), in an effort to clarify the fracture mechanisms. The results show that a surface hardening layer with the thickness of about 0.3-0.6 mm was gained by the experimental alloys after LSP treatment, but the formation of surface hardening layer had not affected the yield strength. Furthermore, fundamental differences in the plastic responses at different temperatures due to LSP treatment had been discovered. At 700 degrees C, the slip deformation was held back when it extended to the surface hardening layer and the ensuing slip steps improved the plasticity; however, at 1000 degrees C, surface hardening layer hindered the macro necking, which resulted in the relatively lower plasticity.
description.department[lu, g. x. ; liu, j. d. ; zhou, y. z. ; jin, t. ; sun, x. f. ; hu, z. q.] chinese acad sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china ; [lu, g. x.] univ chinese acad sci, 19 yuquan rd, beijing 100049, peoples r china ; [qiao, h. c. ; zhao, j. b.] chinese acad sci, shenyang inst automat, 114 nanta rd, shenyang 110016, peoples r china
KeywordNickel Based Superalloys Laser Shock Treatment Hardening Fracture Plasticity
Subject AreaNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationHigh Technology Research and Development Program of China [2014AA041701]; National Natural Science Foundation of China [51171179, 51271174, 51331005, 51501219, 11332010]; Natural Science Foundation of Liaoning Province in China [2015020115]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/78287
Collection中国科学院金属研究所
Corresponding AuthorLiu, JD; Jin, T (reprint author), Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
Recommended Citation
GB/T 7714
Lu, G. X.,Liu, J. D.,Qiao, H. C.,et al. Effect of laser shock on tensile deformation behavior of a single crystal nickel-base superalloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2017,686:46-53.
APA Lu, G. X..,Liu, J. D..,Qiao, H. C..,Zhou, Y. Z..,Jin, T..,...&Jin, T .(2017).Effect of laser shock on tensile deformation behavior of a single crystal nickel-base superalloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,686,46-53.
MLA Lu, G. X.,et al."Effect of laser shock on tensile deformation behavior of a single crystal nickel-base superalloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 686(2017):46-53.
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
[Lu, G. X.]'s Articles
[Liu, J. D.]'s Articles
[Qiao, H. C.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Lu, G. X.]'s Articles
[Liu, J. D.]'s Articles
[Qiao, H. C.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Lu, G. X.]'s Articles
[Liu, J. D.]'s Articles
[Qiao, H. C.]'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.