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Description of stress-strain response and evaluation of the formability for Al-Cu-Mg alloy under the impact hydroforming
Chen,Da-Yong1,2; Zhang,Shi-Hong1; Xu,Yong1; Ma,Yan1; Song,Hong-Wu1; Xia,Liang-Liang1,2
2020-11-01
Source PublicationIOP Conference Series: Materials Science and Engineering
ISSN1757-8981
Volume967Issue:1
AbstractAbstract 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.
KeywordAl-Cu-Mg alloy impact hydroforming stress-strain response modified Kocks-Mecking model high strain rate formability
DOI10.1088/1757-899X/967/1/012028
Language英语
WOS IDIOP:1757-8981-967-1-012028
PublisherIOP Publishing
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/80677
Affiliation1.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
Recommended Citation
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).
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