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Anisotropy of small punch creep performance of selective laser melted GH4169 at 650 C
Ma, Tao1; Zhang, Bin1; Wang, Li-Yi2; Song, Zhu-Man2; Luo, Xue-Mei2; Liu, Chang-Sheng1; Zhang, Guang-Ping2
Corresponding AuthorZhang, Bin(zhangb@atm.neu.edu.cn) ; Zhang, Guang-Ping(gpzhang@imr.ac.cn)
2021-03-04
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
Volume806Pages:11
AbstractThe large temperature gradient and the epitaxial growth of grains during selective laser melting process usually lead to the mechanical anisotropy of metal parts. To evaluate creep anisotropy of selective laser melting fabricated GH4169 alloy, in this paper creep performance of GH4169 was investigated by means of small punch creep test method. The effect of the small punch loading-induced prestrain on creep properties of the specimens was examined. The results indicate that under the same heat-treatment and the loading conditions, the small punch creep specimens loaded along the building direction have the longer creep life and the larger creep plasticity than the ones loaded along the scanning direction. The finding reveals that loading deformation induced dynamic recrystallization has a significant effect on improving creep properties by weakening anisotropy properly. The small punch creep properties of the specimens loaded along the building direction superior to that of the specimens loaded along the scanning direction are mainly attributed to the higher deformability of heterogeneous microstructure, the lower recrystallization activation energy and the deformation activation energy.
KeywordSelective laser melting GH4169 Small punch creep Anisotropy Recrystallization
Funding OrganizationNational Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; Fundamental Research Project of Shenyang National Laboratory for Materials Science ; project of 'Manufacturing the swirl nozzles of the high pressure turbine by selective laser melting'
DOI10.1016/j.msea.2020.140608
Indexed BySCI
Language英语
Funding ProjectNational Key R&D Program of China[2017YFB0305800] ; National Natural Science Foundation of China (NSFC)[51671050] ; National Natural Science Foundation of China (NSFC)[51971060] ; National Natural Science Foundation of China (NSFC)[51771207] ; Fundamental Research Project of Shenyang National Laboratory for Materials Science[L2019R18] ; project of 'Manufacturing the swirl nozzles of the high pressure turbine by selective laser melting'
WOS Research AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000620938800002
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/160922
Collection中国科学院金属研究所
Corresponding AuthorZhang, Bin; Zhang, Guang-Ping
Affiliation1.Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, Minist Educ, 3-11 Wenhua Rd, Shenyang 110819, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Ma, Tao,Zhang, Bin,Wang, Li-Yi,et al. Anisotropy of small punch creep performance of selective laser melted GH4169 at 650 C[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2021,806:11.
APA Ma, Tao.,Zhang, Bin.,Wang, Li-Yi.,Song, Zhu-Man.,Luo, Xue-Mei.,...&Zhang, Guang-Ping.(2021).Anisotropy of small punch creep performance of selective laser melted GH4169 at 650 C.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,806,11.
MLA Ma, Tao,et al."Anisotropy of small punch creep performance of selective laser melted GH4169 at 650 C".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 806(2021):11.
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