Abnormal Recrystallization Behavior of the Cold-Rolled Al-Zn-Mg-Zr (7046A) Sheets during Annealing

doi:10.1002/adem.202100629

IMR OpenIR

	Abnormal Recrystallization Behavior of the Cold-Rolled Al-Zn-Mg-Zr (7046A) Sheets during Annealing
	Huang, Jiwu 1,2; Xu, Chenglong 1; Jiang, Fuqing 1,3; Jiang, Yingge 1
通讯作者	Jiang, Fuqing(fqjiang_imr@163.com)
	2021-07-26
发表期刊	ADVANCED ENGINEERING MATERIALS
ISSN	1438-1656
页码	12
摘要	The 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.
关键词	abnormal hardening Al-Zn-Mg-Zr alloy annealing microstructures recovery and recrystallization
资助者	Key-Area Research and Development Program of Guangdong Province
DOI	10.1002/adem.202100629
收录类别	SCI
语种	英语
资助项目	Key-Area Research and Development Program of Guangdong Province[2020B010186002]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000678866200001
出版者	WILEY-V C H VERLAG GMBH
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/159699
专题	中国科学院金属研究所
通讯作者	Jiang, Fuqing
作者单位	1.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
推荐引用方式 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.