Effect of Hot Pressing Temperature on Microstructure and Tensile Properties of SiC/Al-Zn-Mg-Cu Composites

doi:10.11900/0412.1961.2018.00523

CORC > 金属研究所 > 中国科学院金属研究所

	Effect of Hot Pressing Temperature on Microstructure and Tensile Properties of SiC/Al-Zn-Mg-Cu Composites
	Ma Guonan 1,2; Wang Dong 2; Liu Zhenyu 2; Bi Sheng 1,2; Zan Yuning 1,2; Xiao Bolv 2; Ma Zongyi 2
刊名	ACTA METALLURGICA SINICA
	2019-10-11
卷号	55 期号:10 页码:1319-1328
关键词	powder metallurgy metal matrix composite interface precipitate
ISSN号	0412-1961
DOI	10.11900/0412.1961.2018.00523
通讯作者	Wang Dong(dongwang@imr.ac.cn)
英文摘要	Particulate reinforced aluminum matrix composites have been widely used in industrial fields. In general, high strength aluminium alloys, such as 2024Al are employed to produce stronger composites. However, the composites with high strength Al-Zn-Mg-Cu alloys as the matrices are paid relative attentions. Therefore, the corresponding optimization for fabrication parameters has not been well understood. In the present work, SiC particles with volume fraction of 15% reinforced Al-7.5Zn-2.8Mg-1.7Cu (mass fraction, %) composites were fabricated using powder metallurgy (PM) technique at hot pressing temperatures of 500, 520, 540 and 560 degrees C. TEM, EPMA and tensile test were used to study the effect of hot pressing temperature on the microstructure and tensile properties of SiC/Al-Zn-Mg-Cu composites. The measured densities indicated that all the composites were completely condensed, no pores were observed. Undissolved phase containing Mg and Cu segregated in matrix of the composites hot pressed at 500 and 520 degrees C, resulting in instable tensile properties. With increasing hot pressing temperature to 540 degrees C Mg and Cu were uniformly distributed in the composites which exhibited the stable tensile proper- ties. With further increasing temperature to 560 degrees C, Mg segregated around SiC particles due to interface reaction. In this case, the content of MgZn2 phase was decreased, resulting in the reduction of tensile strength. HAADF-STEM and EDS analyses showed that the interface compounds were oxide of Mg and coarse MgZn2 phase.
资助项目	National Key Research and Development Program of China[2017YFB0703104] ; National Natural Science Foundation of China[51771193] ; National Natural Science Foundation of China[U1508216]
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000487716200010
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/135556]
专题	金属研究所_中国科学院金属研究所
通讯作者	Wang Dong
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Ma Guonan,Wang Dong,Liu Zhenyu,et al. Effect of Hot Pressing Temperature on Microstructure and Tensile Properties of SiC/Al-Zn-Mg-Cu Composites[J]. ACTA METALLURGICA SINICA,2019,55(10):1319-1328.
APA	Ma Guonan.,Wang Dong.,Liu Zhenyu.,Bi Sheng.,Zan Yuning.,...&Ma Zongyi.(2019).Effect of Hot Pressing Temperature on Microstructure and Tensile Properties of SiC/Al-Zn-Mg-Cu Composites.ACTA METALLURGICA SINICA,55(10),1319-1328.
MLA	Ma Guonan,et al."Effect of Hot Pressing Temperature on Microstructure and Tensile Properties of SiC/Al-Zn-Mg-Cu Composites".ACTA METALLURGICA SINICA 55.10(2019):1319-1328.