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Effect of Hot Pressing Temperature on Microstructure and Tensile Properties of SiC/Al-Zn-Mg-Cu Composites
Ma Guonan1,2; Wang Dong1; Liu Zhenyu1; Bi Sheng1,2; Zan Yuning1,2; Xiao Bolv1; Ma Zongyi1
Corresponding AuthorWang Dong(dongwang@imr.ac.cn)
2019-10-11
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume55Issue:10Pages:1319-1328
AbstractParticulate 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.
Keywordpowder metallurgy metal matrix composite interface precipitate
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China
DOI10.11900/0412.1961.2018.00523
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2017YFB0703104] ; National Natural Science Foundation of China[51771193] ; National Natural Science Foundation of China[U1508216]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000487716200010
PublisherSCIENCE PRESS
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/135552
Collection中国科学院金属研究所
Corresponding AuthorWang Dong
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China
Recommended Citation
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.
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