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Effects of minor Sc addition on the microstructure and mechanical properties of 7055 Al alloy during aging
Teng, GB; Liu, CY; Ma, ZY; Zhou, WB; Wei, LL; Chen, Y; Li, J; Mo, YF; Liu, CY (reprint author), Guilin Univ Technol, Key Lab New Proc Technol Nonferrous Met & Mat, Minist Educ, Guilin 541004, Peoples R China.; Ma, ZY (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
2018-01-24
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
Volume713Pages:61-66
AbstractThis study investigated the effects of 0.25% (mass ratio) Sc addition on the microstructure and mechanical properties of 7055 alloy during aging. Sc addition induced a grain boundary effect, which refined the grains of the 7055 alloy. Sc addition also increased the precipitation nucleation efficiency and promoted the uniform precipitation of the eta' phase of 7055 alloy during aging. Compared with pure 7055 alloy, 7055 alloy with Sc exhibited improved hardness, tensile strength, ductility, and thermal stability. This improvement was attributed to the finer size, higher density, more uniformly distributed eta' phase, less eta phase, and finer Al grains of 7055 alloy with Sc compared with those of 7055 alloy without Sc.; This study investigated the effects of 0.25% (mass ratio) Sc addition on the microstructure and mechanical properties of 7055 alloy during aging. Sc addition induced a grain boundary effect, which refined the grains of the 7055 alloy. Sc addition also increased the precipitation nucleation efficiency and promoted the uniform precipitation of the eta' phase of 7055 alloy during aging. Compared with pure 7055 alloy, 7055 alloy with Sc exhibited improved hardness, tensile strength, ductility, and thermal stability. This improvement was attributed to the finer size, higher density, more uniformly distributed eta' phase, less eta phase, and finer Al grains of 7055 alloy with Sc compared with those of 7055 alloy without Sc.
description.department[teng, g. b. ; liu, c. y. ; wei, l. l. ; chen, y.] guilin univ technol, key lab new proc technol nonferrous met & mat, minist educ, guilin 541004, peoples r china ; [liu, c. y. ; ma, z. y.] chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, liaoning, peoples r china ; [zhou, w. b. ; li, j. ; mo, y. f.] alnan aluminium co ltd, nanning 530000, peoples r china
KeywordMg-cu Alloy Stress-corrosion Cracking Aluminum-alloy Precipitation Behaviors Tensile Properties Pre-strain Zr Alloy Evolution Strength 7055-aluminum-alloy
Subject AreaNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China [51601045]; Guangxi "Bagui" Teams for Innovation and Research; Research Program of Science and Technology of Guangxi [GKAB16380021]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79567
Collection中国科学院金属研究所
Corresponding AuthorLiu, CY (reprint author), Guilin Univ Technol, Key Lab New Proc Technol Nonferrous Met & Mat, Minist Educ, Guilin 541004, Peoples R China.; Ma, ZY (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
Recommended Citation
GB/T 7714
Teng, GB,Liu, CY,Ma, ZY,et al. Effects of minor Sc addition on the microstructure and mechanical properties of 7055 Al alloy during aging[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2018,713:61-66.
APA Teng, GB.,Liu, CY.,Ma, ZY.,Zhou, WB.,Wei, LL.,...&Ma, ZY .(2018).Effects of minor Sc addition on the microstructure and mechanical properties of 7055 Al alloy during aging.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,713,61-66.
MLA Teng, GB,et al."Effects of minor Sc addition on the microstructure and mechanical properties of 7055 Al alloy during aging".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 713(2018):61-66.
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