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Effects of friction stir processing and minor Sc addition on the microstructure, mechanical properties, and damping capacity of 7055 Al alloy
Chen, Y; Liu, CY; Zhang, B; Ma, ZY; Zhou, WB; Jiang, HJ; Huang, HF; Wei, LL; 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
Source PublicationMATERIALS CHARACTERIZATION
ISSN1044-5803
Volume135Pages:25-31
AbstractThis study investigated the effects of friction stir processing (FSP) and addition of 0.25% (mass ratio) Sc on the microstructure, mechanical properties, and damping capacity of AA 7055 alloy. Microstructure analyses revealed that a low tool rotation rate of 300 rpm effectively inhibited the grain coarsening in the recrystallization of the alloy during FSP. Sc addition prevented the coarsening of grains and precipitated eta phase and the annihilation of dislocations in the FSP AA 7055 alloy. After being subjected to FSP at 300 rpm, the AA 7055 alloy containing Sc exhibited good mechanical and damping properties, which were mainly attributed to the fine recrystallized grain structure, fine precipitated eta phase, and large number of nano-sized Al-3(Sc, Zr) particles located at the grain boundaries and dislocations. This work provides an effective strategy for preparing commercial Al alloys with excellent damping capacity and mechanical properties.; This study investigated the effects of friction stir processing (FSP) and addition of 0.25% (mass ratio) Sc on the microstructure, mechanical properties, and damping capacity of AA 7055 alloy. Microstructure analyses revealed that a low tool rotation rate of 300 rpm effectively inhibited the grain coarsening in the recrystallization of the alloy during FSP. Sc addition prevented the coarsening of grains and precipitated eta phase and the annihilation of dislocations in the FSP AA 7055 alloy. After being subjected to FSP at 300 rpm, the AA 7055 alloy containing Sc exhibited good mechanical and damping properties, which were mainly attributed to the fine recrystallized grain structure, fine precipitated eta phase, and large number of nano-sized Al-3(Sc, Zr) particles located at the grain boundaries and dislocations. This work provides an effective strategy for preparing commercial Al alloys with excellent damping capacity and mechanical properties.
description.department[chen, y. ; liu, c. y. ; jiang, h. j. ; huang, h. f. ; wei, l. l.] 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 ; [zhang, b.] yanshan univ, state key lab metastable mat sci & technol, qinhuangdao 066004, peoples r china ; [zhou, w. b.] alnan aluminium co ltd, nanning 530000, peoples r china
KeywordStress-corrosion Cracking Low-temperature Superplasticity Zr Alloy Tensile Properties Aluminum-alloy Pre-strain Behavior Cu Evolution
Subject AreaMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
Funding OrganizationNational Natural Science Foundation of China [51601045]; Guangxi "Bagui" Teams for Innovation and Research; Guangxi Natural Science Foundation [2015GXNSFBA139238]; 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/321006/79608
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
Chen, Y,Liu, CY,Zhang, B,et al. Effects of friction stir processing and minor Sc addition on the microstructure, mechanical properties, and damping capacity of 7055 Al alloy[J]. MATERIALS CHARACTERIZATION,2018,135:25-31.
APA Chen, Y.,Liu, CY.,Zhang, B.,Ma, ZY.,Zhou, WB.,...&Ma, ZY .(2018).Effects of friction stir processing and minor Sc addition on the microstructure, mechanical properties, and damping capacity of 7055 Al alloy.MATERIALS CHARACTERIZATION,135,25-31.
MLA Chen, Y,et al."Effects of friction stir processing and minor Sc addition on the microstructure, mechanical properties, and damping capacity of 7055 Al alloy".MATERIALS CHARACTERIZATION 135(2018):25-31.
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