Dynamic recrystallization and precipitation behavior of a novel Sc, Zr alloyed Al-Zn-Mg-Cu alloy during hot deformation

doi:10.1016/j.matchar.2021.111629

IMR OpenIR

	Dynamic recrystallization and precipitation behavior of a novel Sc, Zr alloyed Al-Zn-Mg-Cu alloy during hot deformation
	Xu, Chenglong 1; Huang, Jiwu 1,2; Jiang, Fuqing 3; Jiang, Yingge 1,4
通讯作者	Huang, Jiwu(huangjw@csu.edu.cn)
	2022
发表期刊	MATERIALS CHARACTERIZATION
ISSN	1044-5803
卷号	183 页码:14
摘要	The 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.
关键词	Al-Zn-Mg-Cu-Sc-Zr alloy hot compression flow behavior dynamic recrystallization mechanism precipitation behavior
资助者	Key-Area Research and Development Program of Guangdong Province
DOI	10.1016/j.matchar.2021.111629
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 ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS记录号	WOS:000729283300001
出版者	ELSEVIER SCIENCE INC
引用统计	被引频次：40[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/321006/167293
专题	中国科学院金属研究所
通讯作者	Huang, Jiwu
作者单位	1.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
推荐引用方式 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.