IMR OpenIR
Temperature dependence of tensile behavior and deformation microstructure of a Re-containing Ni-base single crystal superalloy
Wang, G. L.; Liu, J. L.; Liu, J. D.; Wang, X. G.; Zhou, Y. Z.; Sun, X. D.; Zhang, H. F.; Jin, T.; Liu, JL; Jin, T (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
2017-09-15
Source PublicationMATERIALS & DESIGN
ISSN0264-1275
Volume130Pages:131-139
AbstractTensile behavior of a Re-containing Ni-base single crystal superalloy with [001] orientation was conducted at from room temperature to 1100 degrees C, and the corresponding deformation microstructure after fracture has been investigated by TEM. This alloy exhibits temperature dependent deformation microstructure and resultant tensile behavior. Shearing of gamma' precipitates by dislocations, with respect to anti-phase boundary (APB) shearing and superlattice stacking fault (SSF) shearing, is mainly controlled by the interplay between gamma/gamma' lattice misfit, intrinsic strength of gamma' phase and stress field of dislocations accumulated on gamma/gamma' interfaces. Below 800 degrees C, the variation with temperature of (0.2%) yield strength is closely linked with the way of dislocations entering.' precipitates, which is largely influenced by temperature dependent gamma/gamma' microstructure modifications. The tensile strength at 1100 degrees C is determined by gliding-climbing of dislocations, with the help of thermal activation, in obviously modified gamma/gamma' microstructure. In fact, flow stresses at 800 degrees C and 1100 degrees C drop remarkably with the onset of numerous APB shearing of gamma' particles after gamma/gamma' misfit stresses are relaxed by depositing dislocations. Last, thermally-activated and plasticity-induced gamma/gamma' microstructure modifications are taken into account to elucidate the deformation microstructure and resulting tensile behavior of this Re-bearing alloy at various temperatures.; Tensile behavior of a Re-containing Ni-base single crystal superalloy with [001] orientation was conducted at from room temperature to 1100 degrees C, and the corresponding deformation microstructure after fracture has been investigated by TEM. This alloy exhibits temperature dependent deformation microstructure and resultant tensile behavior. Shearing of gamma' precipitates by dislocations, with respect to anti-phase boundary (APB) shearing and superlattice stacking fault (SSF) shearing, is mainly controlled by the interplay between gamma/gamma' lattice misfit, intrinsic strength of gamma' phase and stress field of dislocations accumulated on gamma/gamma' interfaces. Below 800 degrees C, the variation with temperature of (0.2%) yield strength is closely linked with the way of dislocations entering.' precipitates, which is largely influenced by temperature dependent gamma/gamma' microstructure modifications. The tensile strength at 1100 degrees C is determined by gliding-climbing of dislocations, with the help of thermal activation, in obviously modified gamma/gamma' microstructure. In fact, flow stresses at 800 degrees C and 1100 degrees C drop remarkably with the onset of numerous APB shearing of gamma' particles after gamma/gamma' misfit stresses are relaxed by depositing dislocations. Last, thermally-activated and plasticity-induced gamma/gamma' microstructure modifications are taken into account to elucidate the deformation microstructure and resulting tensile behavior of this Re-bearing alloy at various temperatures.
description.department[wang, g. l. ; liu, j. l. ; liu, j. d. ; wang, x. g. ; zhou, y. z. ; zhang, h. f. ; jin, t.] chinese acad sci, inst met res, shenyang 110016, liaoning, peoples r china ; [wang, g. l. ; sun, x. d. ; zhang, h. f.] northeastern univ, sch mat sci & engn, shenyang 110004, liaoning, peoples r china
KeywordNi-base Single Crystal Superalloy Re-containing Deformation Microstructure Tensile Behavior Gamma/gamma ' Coherency Relaxation Superlattice Stacking Fault Formation
Subject AreaMaterials Science, Multidisciplinary
Funding OrganizationNational High Technology Research and Development Program of China ("863 Program") [20102014AA041701]; National Natural Science Foundation of China [11332010, U1508213, 51331005, 51401210, 51601192, 51671188, 51571196]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/78012
Collection中国科学院金属研究所
Corresponding AuthorLiu, JL; Jin, T (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
Recommended Citation
GB/T 7714
Wang, G. L.,Liu, J. L.,Liu, J. D.,et al. Temperature dependence of tensile behavior and deformation microstructure of a Re-containing Ni-base single crystal superalloy[J]. MATERIALS & DESIGN,2017,130:131-139.
APA Wang, G. L..,Liu, J. L..,Liu, J. D..,Wang, X. G..,Zhou, Y. Z..,...&Jin, T .(2017).Temperature dependence of tensile behavior and deformation microstructure of a Re-containing Ni-base single crystal superalloy.MATERIALS & DESIGN,130,131-139.
MLA Wang, G. L.,et al."Temperature dependence of tensile behavior and deformation microstructure of a Re-containing Ni-base single crystal superalloy".MATERIALS & DESIGN 130(2017):131-139.
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
[Wang, G. L.]'s Articles
[Liu, J. L.]'s Articles
[Liu, J. D.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wang, G. L.]'s Articles
[Liu, J. L.]'s Articles
[Liu, J. D.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wang, G. L.]'s Articles
[Liu, J. L.]'s Articles
[Liu, J. D.]'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.