Effects of friction stir processing and minor Sc addition on the microstructure, mechanical properties, and damping capacity of 7055 Al alloy

CORC > 金属研究所 > 中国科学院金属研究所

	Effects of friction stir processing and minor Sc addition on the microstructure, mechanical properties, and damping capacity of 7055 Al alloy
	Chen, Y; Liu, CY; Zhang, B; Ma, ZY; Zhou, WB; Jiang, HJ; Huang, HF; Wei, LL; Liu, CY (reprint author), Guilin Univ Technol, Key Lab New Proc Technol Nonferrous Met & Mat, Minist Educ, Guilin 541004, Peoples R China.; Ma, ZY (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
刊名	MATERIALS CHARACTERIZATION
	2018
卷号	135 页码:25-31
关键词	Stress-corrosion Cracking Low-temperature Superplasticity Zr Alloy Tensile Properties Aluminum-alloy Pre-strain Behavior Cu Evolution
ISSN号	1044-5803
英文摘要	This study investigated the effects of friction stir processing (FSP) and addition of 0.25% (mass ratio) Sc on the microstructure, mechanical properties, and damping capacity of AA 7055 alloy. Microstructure analyses revealed that a low tool rotation rate of 300 rpm effectively inhibited the grain coarsening in the recrystallization of the alloy during FSP. Sc addition prevented the coarsening of grains and precipitated eta phase and the annihilation of dislocations in the FSP AA 7055 alloy. After being subjected to FSP at 300 rpm, the AA 7055 alloy containing Sc exhibited good mechanical and damping properties, which were mainly attributed to the fine recrystallized grain structure, fine precipitated eta phase, and large number of nano-sized Al-3(Sc, Zr) particles located at the grain boundaries and dislocations. This work provides an effective strategy for preparing commercial Al alloys with excellent damping capacity and mechanical properties.; This study investigated the effects of friction stir processing (FSP) and addition of 0.25% (mass ratio) Sc on the microstructure, mechanical properties, and damping capacity of AA 7055 alloy. Microstructure analyses revealed that a low tool rotation rate of 300 rpm effectively inhibited the grain coarsening in the recrystallization of the alloy during FSP. Sc addition prevented the coarsening of grains and precipitated eta phase and the annihilation of dislocations in the FSP AA 7055 alloy. After being subjected to FSP at 300 rpm, the AA 7055 alloy containing Sc exhibited good mechanical and damping properties, which were mainly attributed to the fine recrystallized grain structure, fine precipitated eta phase, and large number of nano-sized Al-3(Sc, Zr) particles located at the grain boundaries and dislocations. This work provides an effective strategy for preparing commercial Al alloys with excellent damping capacity and mechanical properties.
学科主题	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
语种	英语
资助机构	National Natural Science Foundation of China [51601045]; Guangxi "Bagui" Teams for Innovation and Research; Guangxi Natural Science Foundation [2015GXNSFBA139238]; Research Program of Science and Technology of Guangxi [GKAB16380021]
公开日期	2018-06-05
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/79608]
专题	金属研究所_中国科学院金属研究所
通讯作者	Liu, CY (reprint author), Guilin Univ Technol, Key Lab New Proc Technol Nonferrous Met & Mat, Minist Educ, Guilin 541004, Peoples R China.; Ma, ZY (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
推荐引用方式 GB/T 7714	Chen, Y,Liu, CY,Zhang, B,et al. Effects of friction stir processing and minor Sc addition on the microstructure, mechanical properties, and damping capacity of 7055 Al alloy[J]. MATERIALS CHARACTERIZATION,2018,135:25-31.
APA	Chen, Y.,Liu, CY.,Zhang, B.,Ma, ZY.,Zhou, WB.,...&Ma, ZY .(2018).Effects of friction stir processing and minor Sc addition on the microstructure, mechanical properties, and damping capacity of 7055 Al alloy.MATERIALS CHARACTERIZATION,135,25-31.
MLA	Chen, Y,et al."Effects of friction stir processing and minor Sc addition on the microstructure, mechanical properties, and damping capacity of 7055 Al alloy".MATERIALS CHARACTERIZATION 135(2018):25-31.