Effect of blank size on impact hydroforming of 2195 Al-Li alloy half-tube part with curvature

doi:10.1088/1757-899X/1284/1/012024

IMR OpenIR

	Effect of blank size on impact hydroforming of 2195 Al-Li alloy half-tube part with curvature
	Zhu,H L 1,2; Xu,Y 1; Chen,S F 1; Zhang,S H 1
	2023-06-01
发表期刊	IOP Conference Series: Materials Science and Engineering
ISSN	1757-8981
卷号	1284 期号:1
摘要	Abstract Aluminum-Lithium (Al-Li) alloy has excellent properties such as low density, high elastic modulus and high specific strength, and it is considered as the most ideal structural material in aerospace. However, due to the low plasticity of Al-Li alloy at room temperature, it is easy to crack during cold forming, so its application and development have been limited. In order to explore the possibility of improving the plasticity of 2195 Al-Li alloy at room temperature, a half-tube part with curvature and deep cavity structure was formed by using impact hydroforming (IHF) technology. In this paper, the process route of half-tube part was optimized and four sizes of blank were designed. Through finite element numerical simulation and analysis, it was found that the F area was prone to wrinkle defects when there was less material at the inner arc position, and the most serious thinning occurred in the design margin area. After analysis and comparison, the blank size with drawing ratio of 2.22 was finally selected. Based on the verification experiment, it was found that due to the material properties of Al-Li alloy and the characteristics of IHF, one-step forming was difficult, and the forming of half-tube part was prone to insufficient drawing depth or large area fracture; Although the part obtained by two-step forming also had cracks, the overall forming quality of the part would not be affected because they were located in the design margin area to be removed later. In addition, it was observed that the surface quality of the part removed the design margin area were free of wrinkles and cracks, which meets the objective design requirements.
DOI	10.1088/1757-899X/1284/1/012024
语种	英语
WOS记录号	IOP:MSE_1284_1_012024
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/321006/177097
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, People’s Republic of China 2.School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, People’s Republic of China
推荐引用方式 GB/T 7714	Zhu,H L,Xu,Y,Chen,S F,et al. Effect of blank size on impact hydroforming of 2195 Al-Li alloy half-tube part with curvature[J]. IOP Conference Series: Materials Science and Engineering,2023,1284(1).
APA	Zhu,H L,Xu,Y,Chen,S F,&Zhang,S H.(2023).Effect of blank size on impact hydroforming of 2195 Al-Li alloy half-tube part with curvature.IOP Conference Series: Materials Science and Engineering,1284(1).
MLA	Zhu,H L,et al."Effect of blank size on impact hydroforming of 2195 Al-Li alloy half-tube part with curvature".IOP Conference Series: Materials Science and Engineering 1284.1(2023).