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Abnormal Recrystallization Behavior of the Cold-Rolled Al-Zn-Mg-Zr (7046A) Sheets during Annealing
Huang, Jiwu1,2; Xu, Chenglong1; Jiang, Fuqing1,3; Jiang, Yingge1
Corresponding AuthorJiang, Fuqing(fqjiang_imr@163.com)
2021-07-26
Source PublicationADVANCED ENGINEERING MATERIALS
ISSN1438-1656
Pages12
AbstractThe recrystallization behavior and microstructures' evolution of cold-rolled Al-Zn-Mg-Zr (7046A) sheets with various annealing treatments are investigated. Compared with the conventional hardness versus annealing temperature curves, the abnormal hardening occurs above 375 degrees C, which triggers the contemplation about abnormal recrystallization behavior and abnormal hardening behavior herein. In accordance with texture evolution with diverse annealing temperatures or time, recovery and recrystallization processes are more sensitive to temperature than holding time, and the rolling texture also transforms into recrystallization texture at 350-375 degrees C. Afterward, microstructure analysis and the recovery and recrystallization theory are combined to obtain information about the dislocation density, the grain features, and the solid-solution ability, explaining the annealing-induced hardening phenomenon. In addition, the recovery process means that the dislocations are consumed and subgrains with low misorientation angle are transformed into subgrains with high misorientation angle, whereas the high-angle subgrains are transformed into recrystallized grains during the recrystallization process. Combined with the grain distribution and abnormal hardness evolution, the abnormal recrystallization behavior is determined to occur at 375 degrees C. Due to poor thermal activation, recrystallization occurs preferentially in favorable sites, and some grains grow preferentially, resulting in abnormal recrystallization behavior.
Keywordabnormal hardening Al-Zn-Mg-Zr alloy annealing microstructures recovery and recrystallization
Funding OrganizationKey-Area Research and Development Program of Guangdong Province
DOI10.1002/adem.202100629
Indexed BySCI
Language英语
Funding ProjectKey-Area Research and Development Program of Guangdong Province[2020B010186002]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000678866200001
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/159699
Collection中国科学院金属研究所
Corresponding AuthorJiang, Fuqing
Affiliation1.Cent South Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China
2.Cent South Univ, Minist Educ, Key Lab Nonferrous Metall Mat Sci & Engn, Changsha 410083, Peoples R China
3.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Huang, Jiwu,Xu, Chenglong,Jiang, Fuqing,et al. Abnormal Recrystallization Behavior of the Cold-Rolled Al-Zn-Mg-Zr (7046A) Sheets during Annealing[J]. ADVANCED ENGINEERING MATERIALS,2021:12.
APA Huang, Jiwu,Xu, Chenglong,Jiang, Fuqing,&Jiang, Yingge.(2021).Abnormal Recrystallization Behavior of the Cold-Rolled Al-Zn-Mg-Zr (7046A) Sheets during Annealing.ADVANCED ENGINEERING MATERIALS,12.
MLA Huang, Jiwu,et al."Abnormal Recrystallization Behavior of the Cold-Rolled Al-Zn-Mg-Zr (7046A) Sheets during Annealing".ADVANCED ENGINEERING MATERIALS (2021):12.
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