Mechanical properties and thermal stability of 7055 Al alloy by minor Sc addition

doi:10.1007/s12598-018-1190-z

CORC > 金属研究所 > 中国科学院金属研究所

	Mechanical properties and thermal stability of 7055 Al alloy by minor Sc addition
	Liu, Chong-Yu 1,3; Teng, Guang-Biao 1; Ma, Zong-Yi 3; Wei, Li-Li 1; Zhou, Wen-Biao 2; Huang, Hong-Feng 1; Qi, Hai-Quan 1
刊名	RARE METALS
	2020-06-01
卷号	39 期号:6 页码:725-732
关键词	Al alloy Sc addition Microstructure Mechanical properties
ISSN号	1001-0521
DOI	10.1007/s12598-018-1190-z
通讯作者	Ma, Zong-Yi(zyma@imr.ac.cn)
英文摘要	This study investigated the effect of 0.25 wt% Sc addition on the microstructure and mechanical properties of AA 7055 alloy. The addition of Sc obviously refined the grains of AA 7055 alloy during casting, homogenizing, rolling, solution, and aging treatments due to the formation of primary and precipitate Al-3(Sc,Zr) phase. The recrystallization and precipitation of AA 7055 alloy were inhibited during heat treatments by Sc addition. The Sc-containing AA 7055 alloy exhibited higher thermal stability than AA 7055 alloy during homogenizing treatment, because of the grain boundary pinning effect of nano-sized Al-3(Sc,Zr) particles. Given its structure characteristics such as fine grains, fine eta ' phase, and less eta phase, AA 7055 alloy with added Sc showed good mechanical properties after aging at 120 degrees C for 24 h, with an ultimate tensile strength (UTS) of 679 MPa and elongation (EL) of 14%. This work provides an effective strategy to fabricate Al-Zn-Mg(-Cu) series (7xxx) alloys with excellent mechanical properties.
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	NONFERROUS METALS SOC CHINA
WOS记录号	WOS:000538372800014
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/139366]
专题	金属研究所_中国科学院金属研究所
通讯作者	Ma, Zong-Yi
作者单位	1.Guilin Univ Technol, Key Lab New Proc Technol Nonferrous Met & Mat, Minist Educ, Guilin 541004, Peoples R China 2.Alnan Aluminium Co Ltd, Nanning 530000, Peoples R China 3.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Liu, Chong-Yu,Teng, Guang-Biao,Ma, Zong-Yi,et al. Mechanical properties and thermal stability of 7055 Al alloy by minor Sc addition[J]. RARE METALS,2020,39(6):725-732.
APA	Liu, Chong-Yu.,Teng, Guang-Biao.,Ma, Zong-Yi.,Wei, Li-Li.,Zhou, Wen-Biao.,...&Qi, Hai-Quan.(2020).Mechanical properties and thermal stability of 7055 Al alloy by minor Sc addition.RARE METALS,39(6),725-732.
MLA	Liu, Chong-Yu,et al."Mechanical properties and thermal stability of 7055 Al alloy by minor Sc addition".RARE METALS 39.6(2020):725-732.