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Phase-field study on effects of antiphase domain and elastic energy on evolution of gamma ' precipitates in nickel-based superalloys
Yang, M.; Wei, H.; Zhang, J.; Zhao, Y.; Jin, T.; Liu, L.; Sun, X. F.; Zhang, J (reprint author), Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China.; Wei, H (reprint author), Chinese Acad Sci, Inst Met Res, Superalloys Div, Shenyang 110016, Peoples R China.
2017-03-01
Source PublicationCOMPUTATIONAL MATERIALS SCIENCE
ISSN0927-0256
Volume129Pages:211-219
AbstractThe effects of the antiphase domain (APD) and the elastic energy on the morphology evolution of gamma' precipitates in Ni-Al binary alloy during aging process are studied with the phase-field method. The merging-splitting phenomenon between the two neighboring gamma' precipitates is observed. The changes of gamma' area fraction and average 7' size are analyzed for different APDs and for different elastic energies, respectively. It is shown that the merging-splitting phenomenon may occur when the radii of neighboring gamma' precipitates with different APDs are smaller than 24 nm and the critical size for the merged gamma' precipitate splitting is about 108 nm. Besides, the coarsening of gamma' precipitates is significantly impeded by the APDs but accelerated by the elastic energy, and the change of average gamma' size can be divided into two stages with different mechanisms. (C) 2016 Elsevier B.V. All rights reserved.; The effects of the antiphase domain (APD) and the elastic energy on the morphology evolution of gamma' precipitates in Ni-Al binary alloy during aging process are studied with the phase-field method. The merging-splitting phenomenon between the two neighboring gamma' precipitates is observed. The changes of gamma' area fraction and average 7' size are analyzed for different APDs and for different elastic energies, respectively. It is shown that the merging-splitting phenomenon may occur when the radii of neighboring gamma' precipitates with different APDs are smaller than 24 nm and the critical size for the merged gamma' precipitate splitting is about 108 nm. Besides, the coarsening of gamma' precipitates is significantly impeded by the APDs but accelerated by the elastic energy, and the change of average gamma' size can be divided into two stages with different mechanisms. (C) 2016 Elsevier B.V. All rights reserved.
description.department[yang, m. ; zhang, j. ; liu, l.] northwestern polytech univ, state key lab solidificat proc, xian 710072, peoples r china ; [wei, h.] nanjing tech univ, coll sci mat & engn, nanjing 211800, jiangsu, peoples r china ; [wei, h. ; jin, t. ; sun, x. f.] chinese acad sci, inst met res, superalloys div, shenyang 110016, peoples r china ; [zhao, y.] shanghai univ, state key lab adv special steel, shanghai 200444, peoples r china
KeywordAntiphase Domain Elastic Energy Gamma ' Precipitates Coarsening Phase-field Methods
Subject AreaMaterials Science, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China [51331005, 51071164, 51371173, 5140118]; Research Fund of State Key Laboratory of Solidification Processing in NWPU [SKLSP201318]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/78267
Collection中国科学院金属研究所
Corresponding AuthorZhang, J (reprint author), Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China.; Wei, H (reprint author), Chinese Acad Sci, Inst Met Res, Superalloys Div, Shenyang 110016, Peoples R China.
Recommended Citation
GB/T 7714
Yang, M.,Wei, H.,Zhang, J.,et al. Phase-field study on effects of antiphase domain and elastic energy on evolution of gamma ' precipitates in nickel-based superalloys[J]. COMPUTATIONAL MATERIALS SCIENCE,2017,129:211-219.
APA Yang, M..,Wei, H..,Zhang, J..,Zhao, Y..,Jin, T..,...&Wei, H .(2017).Phase-field study on effects of antiphase domain and elastic energy on evolution of gamma ' precipitates in nickel-based superalloys.COMPUTATIONAL MATERIALS SCIENCE,129,211-219.
MLA Yang, M.,et al."Phase-field study on effects of antiphase domain and elastic energy on evolution of gamma ' precipitates in nickel-based superalloys".COMPUTATIONAL MATERIALS SCIENCE 129(2017):211-219.
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