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

IMR OpenIR

	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.
	2018
发表期刊	MATERIALS CHARACTERIZATION
ISSN	1044-5803
卷号	135 页码:25-31
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.
部门归属	[chen, y. ; liu, c. y. ; jiang, h. j. ; huang, h. f. ; wei, l. l.] guilin univ technol, key lab new proc technol nonferrous met & mat, minist educ, guilin 541004, peoples r china ; [liu, c. y. ; ma, z. y.] chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, liaoning, peoples r china ; [zhang, b.] yanshan univ, state key lab metastable mat sci & technol, qinhuangdao 066004, peoples r china ; [zhou, w. b.] alnan aluminium co ltd, nanning 530000, peoples r china
关键词	Stress-corrosion Cracking Low-temperature Superplasticity Zr Alloy Tensile Properties Aluminum-alloy Pre-strain Behavior Cu Evolution
学科领域	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
资助者	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]
收录类别	SCI
语种	英语
WOS记录号	WOS:000423248200004
引用统计	被引频次：32[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/321006/79608
专题	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.