Description of stress-strain response and evaluation of the formability for Al-Cu-Mg alloy under the impact hydroforming

doi:10.1088/1757-899X/967/1/012028

IMR OpenIR

	Description of stress-strain response and evaluation of the formability for Al-Cu-Mg alloy under the impact hydroforming
	Chen,Da-Yong 1,2; Zhang,Shi-Hong 1; Xu,Yong 1; Ma,Yan 1; Song,Hong-Wu 1; Xia,Liang-Liang 1,2
	2020-11-01
发表期刊	IOP Conference Series: Materials Science and Engineering
ISSN	1757-8981
卷号	967 期号:1
摘要	Abstract This study aims at investigating on the descriptions of stress-strain response and the assessment of formability for Al-Cu-Mg alloy under impact hydroforming (IHF). IHF process effectively combines the advantages of the flexible liquid and the impact impulse. The formability of low plastic materials can be increased by using IHF process. The elongation of Al-Cu-Mg alloy can even be more than 50 % compared with the quasi-static forming means (27 %～30 %) if the strain rate was on the level of 5000/s. The stress-strain curve is characterized with S-shape. It is found that the strain hardening rate decreases linearly at the stage III, increases linearly at the stage IV and decreases non-linearly at the stage V. The deformation mechanism is the interaction of dislocation accumulation and dynamic recovery under the transmission from non-sheared to sheared precipitation when the strain rate is on the level of 3000/s～5000/s. A modified Kocks-Mecking model was established to describe the mechanical property of AA 2B06. In addition, the high strain rate formability was evaluated by the new means which revealed the relationship between the impact energies, deep drawing height ratios and the deep drawing ratios by using the finite element modelling of the solid liquid coupling.
关键词	Al-Cu-Mg alloy impact hydroforming stress-strain response modified Kocks-Mecking model high strain rate formability
DOI	10.1088/1757-899X/967/1/012028
语种	英语
WOS记录号	IOP:1757-8981-967-1-012028
出版者	IOP Publishing
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/80679
专题	中国科学院金属研究所
作者单位	1.Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, P.R. China 2.School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, China
推荐引用方式 GB/T 7714	Chen,Da-Yong,Zhang,Shi-Hong,Xu,Yong,et al. Description of stress-strain response and evaluation of the formability for Al-Cu-Mg alloy under the impact hydroforming[J]. IOP Conference Series: Materials Science and Engineering,2020,967(1).
APA	Chen,Da-Yong,Zhang,Shi-Hong,Xu,Yong,Ma,Yan,Song,Hong-Wu,&Xia,Liang-Liang.(2020).Description of stress-strain response and evaluation of the formability for Al-Cu-Mg alloy under the impact hydroforming.IOP Conference Series: Materials Science and Engineering,967(1).
MLA	Chen,Da-Yong,et al."Description of stress-strain response and evaluation of the formability for Al-Cu-Mg alloy under the impact hydroforming".IOP Conference Series: Materials Science and Engineering 967.1(2020).