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Dynamic recrystallization and precipitation behavior of a novel Sc, Zr alloyed Al-Zn-Mg-Cu alloy during hot deformation
Xu, Chenglong1; Huang, Jiwu1,2; Jiang, Fuqing3; Jiang, Yingge1,4
Corresponding AuthorHuang, Jiwu(huangjw@csu.edu.cn)
2022
Source PublicationMATERIALS CHARACTERIZATION
ISSN1044-5803
Volume183Pages:14
AbstractThe hot deformation behavior of a novel Sc, Zr alloyed Al-Zn-Mg-Cu alloy was explored in the isothermal hot compression test with a temperature range of 300-500 degrees C and a strain rate of 0.001-10 S-1. The stress-strain curve, constitutive equation, and processing map were integrated to evaluate the flow behavior and hot work-ability of the studied alloy. Besides, the relationship between dynamic recrystallization and precipitation behavior and the Zener-Hollomon (Z) parameter during hot deformation was deeply explored. As lnZ decreased, the dislocation density decreased, while the misorientation angle increased. Meanwhile, with the decrease of lnZ, the amount of low-angle grain boundaries and medium-low-angle grain boundaries decreased. Moreover, dynamic recovery is the dominant dynamic softening mechanism, while three different dynamic recrystallization (DRX) mechanisms were the main DRX mechanisms at different lnZ values. Discontinuous DRX dominated at high lnZ value (lnZ >= 33.33); Continuous DRX (CDRX) dominated at middle lnZ value (23.4 < lnZ < 33.33); Geometric DRX dominated at low lnZ value (lnZ <= 23.44). Meanwhile, increasing lnZ value is conducive to precipitation behavior. The intragranular precipitates and grain boundary precipitates are identified as the phase containing Al, Fe, Mn, and Si, the equilibrium eta phase containing Cu and Al-3(Sc, Zr) particles.
KeywordAl-Zn-Mg-Cu-Sc-Zr alloy hot compression flow behavior dynamic recrystallization mechanism precipitation behavior
Funding OrganizationKey-Area Research and Development Program of Guangdong Province
DOI10.1016/j.matchar.2021.111629
Indexed BySCI
Language英语
Funding ProjectKey-Area Research and Development Program of Guangdong Province[2020B010186002]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS IDWOS:000729283300001
PublisherELSEVIER SCIENCE INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/167293
Collection中国科学院金属研究所
Corresponding AuthorHuang, Jiwu
Affiliation1.Cent South Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China
2.Cent South Univ, Key Lab Nonferrous Metall Mat Sci & Engn, Minist Educ, Changsha 410083, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
4.Hunan Aerosp Magnetoelect Co Ltd, Hunan Prov Enterprise Technol Ctr, Changsha 410200, Peoples R China
Recommended Citation
GB/T 7714
Xu, Chenglong,Huang, Jiwu,Jiang, Fuqing,et al. Dynamic recrystallization and precipitation behavior of a novel Sc, Zr alloyed Al-Zn-Mg-Cu alloy during hot deformation[J]. MATERIALS CHARACTERIZATION,2022,183:14.
APA Xu, Chenglong,Huang, Jiwu,Jiang, Fuqing,&Jiang, Yingge.(2022).Dynamic recrystallization and precipitation behavior of a novel Sc, Zr alloyed Al-Zn-Mg-Cu alloy during hot deformation.MATERIALS CHARACTERIZATION,183,14.
MLA Xu, Chenglong,et al."Dynamic recrystallization and precipitation behavior of a novel Sc, Zr alloyed Al-Zn-Mg-Cu alloy during hot deformation".MATERIALS CHARACTERIZATION 183(2022):14.
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