Effect of Minor Sc Addition on Microstructure and Tensile Properties of Hot-Extruded 7055 Alloy

doi:10.1007/s11665-021-06383-y

IMR OpenIR

	Effect of Minor Sc Addition on Microstructure and Tensile Properties of Hot-Extruded 7055 Alloy
	Zhang, Guowei 1; Feng, Xiaohui 2; Yang, Yuansheng 2
通讯作者	Zhang, Guowei(20030358@nuc.edu.cn) ; Feng, Xiaohui(xhfeng@imr.ac.cn)
	2022-06-06
发表期刊	JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
ISSN	1059-9495
页码	8
摘要	The microstructure and tensile properties of hot-extruded Al-8Zn-2Mg-2Cu-0.15Zr alloy (7055 alloy) with the minor addition of Sc were investigated. The 0.1 and 0.2 wt.% Sc were added into 7055 alloy during the preparation process by conventional casting. Attributing to the Sc additions, the grain sizes of as-cast ingots were remarkably refined and the irregular grain morphology changed to nearly spherical. Correspondingly, the distinctly refined microstructure of the 7055 alloy with Sc addition was achieved after hot extrusion. Unlike most reported extrusion cases of 7055 alloy, the extrusion temperature and ram speed were set to be 500 degrees C and 0.1 mm/s, respectively. As the added Sc increased from 0 to 0.1 and 0.2 wt.%, the yield strength (YS) of the T6 treated samples of extruded 7055 alloys were improved from 652 to 660 and 695 MPa, and the ultimate tensile strength (UTS) was 701, 706, and 744 MPa, respectively. The elongation of all the T6 samples remained to be about 11.5%. The good tensile properties of these experimental alloys are mainly attributed to grain refinement, extrusion texture, and the abundant precipitated particles, including Al-3(ScZr) and eta(MgZn2), which effectively pin the dislocation and hinder the migration of grain boundaries.
关键词	Al alloy hot extrusion microstructure scandium addition tensile properties
资助者	National Key Research and Development Program of China ; National Science and Technology Major Project ; Key Research and Development Plan of Shandong Province
DOI	10.1007/s11665-021-06383-y
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2018YFE115800] ; National Science and Technology Major Project[2017-VI-0003-0073] ; Key Research and Development Plan of Shandong Province[2019JZZY020329]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000806671200002
出版者	SPRINGER
引用统计	被引频次：3[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/321006/174192
专题	中国科学院金属研究所
通讯作者	Zhang, Guowei; Feng, Xiaohui
作者单位	1.North Univ China, Sch Mat Sci & Engn, Taiyuan 030051, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Guowei,Feng, Xiaohui,Yang, Yuansheng. Effect of Minor Sc Addition on Microstructure and Tensile Properties of Hot-Extruded 7055 Alloy[J]. JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,2022:8.
APA	Zhang, Guowei,Feng, Xiaohui,&Yang, Yuansheng.(2022).Effect of Minor Sc Addition on Microstructure and Tensile Properties of Hot-Extruded 7055 Alloy.JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,8.
MLA	Zhang, Guowei,et al."Effect of Minor Sc Addition on Microstructure and Tensile Properties of Hot-Extruded 7055 Alloy".JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE (2022):8.