Effects of hydrogen on the dynamic mechanical properties and microstructure of 7055 and 7A52 aluminum alloys

doi:10.1016/j.matchar.2023.113151

IMR OpenIR

	Effects of hydrogen on the dynamic mechanical properties and microstructure of 7055 and 7A52 aluminum alloys
	Li, He 1,3; Yang, Zixuan 1,2,3; Zhang, Chaoqun 1; Peng, Wenfei 1,3; Ma, Kai 4; Oleksandr, Moliar 1,3
通讯作者	Yang, Zixuan(yangzixuan@nbu.edu.cn) ; Peng, Wenfei(pengwenfei@nbu.edu.cn)
	2023-09-01
发表期刊	MATERIALS CHARACTERIZATION
ISSN	1044-5803
卷号	203 页码:11
摘要	In the present work, the effect of hydrogen on the impact resistance of the 7055 and 7A52 aluminum alloys have been experimentally investigated by using split Hopkinson pressure bar (SHPB) and electrochemical hydrogen charging technique. It was first found that hydrogen induced stress chase after yield deformation in 7055 and 7A52 alloys. Meanwhile, hydrogen reduced the yield strengths of the two alloys. Besides, the evolution of microstructures including cracks, particles and dislocations has been quantitatively analyzed by polarizing microscope (PM), scanning electron microscope (SEM) and transmission electron microscopy (TEM). It has been found that both two aluminum alloys are sensitive to hydrogen embrittlement under high-speed deformation conditions. The hydrogen causes hydrogen compression cracks at grain boundaries, pores, and Al2Cu particles in the material, and the hydrogen cracking of both aluminum alloys after impact appeared to be layered, and the lower layer cracking was flat, which indicated that the hydrogen made the alloy embrittle to some extent. Besides, hydrogen reduces the hindering effect of copper-containing phase and large & eta; phase on dislocation movement, which makes the dislocations distribution inside the 7055 alloy grains more uniform. The results show that 7000-series aluminum alloys are sensitive to hydrogen embrittlement under high-speed deformation conditions.
关键词	Hydrogen Dynamic mechanical properties Microstructures
资助者	National Natural Science Foun-dation of China ; Science and Technology Plan of Ningbo City ; Provincial Universities Basic Scientific Research Strategy ; K. C. Wong Magna Fund in Ningbo University
DOI	10.1016/j.matchar.2023.113151
收录类别	SCI
语种	英语
资助项目	National Natural Science Foun-dation of China[52205386] ; National Natural Science Foun-dation of China[51801106] ; National Natural Science Foun-dation of China[52075272] ; Science and Technology Plan of Ningbo City[2019B10100] ; Science and Technology Plan of Ningbo City[2021Z099] ; Provincial Universities Basic Scientific Research Strategy[SJLZ2021002] ; K. C. Wong Magna Fund in Ningbo University
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:001034583100001
出版者	ELSEVIER SCIENCE INC
引用统计	被引频次：7[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/321006/178706
专题	中国科学院金属研究所
通讯作者	Yang, Zixuan; Peng, Wenfei
作者单位	1.Ningbo Univ, Coll Mech Engn & Mech, Ningbo 315211, Peoples R China 2.Ningbo Univ, Zhejiang Prov Engn Res Ctr Safety Pressure Vessel, Ningbo 315211, Peoples R China 3.Ningbo Univ, Key Lab Impact & Safety Engn, Minist Educ, Ningbo 315211, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Li, He,Yang, Zixuan,Zhang, Chaoqun,et al. Effects of hydrogen on the dynamic mechanical properties and microstructure of 7055 and 7A52 aluminum alloys[J]. MATERIALS CHARACTERIZATION,2023,203:11.
APA	Li, He,Yang, Zixuan,Zhang, Chaoqun,Peng, Wenfei,Ma, Kai,&Oleksandr, Moliar.(2023).Effects of hydrogen on the dynamic mechanical properties and microstructure of 7055 and 7A52 aluminum alloys.MATERIALS CHARACTERIZATION,203,11.
MLA	Li, He,et al."Effects of hydrogen on the dynamic mechanical properties and microstructure of 7055 and 7A52 aluminum alloys".MATERIALS CHARACTERIZATION 203(2023):11.