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The improved mechanical properties of Al matrix composites reinforced with oriented beta-Si3N4 whisker
Zhang, Chenxu; Zeng, Yu-Ping; Yao, Dongxu; Yin, Jinwei; Zuo, Kaihui; Xia, Yongfeng; Liang, Hanqin
2019-07-01
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume35Issue:7Pages:1345
SubtypeArticle
AbstractThe beta-Si3N4 whiskers (beta-Si(3)N(4)w) reinforced Al matrix composites were first fabricated by hot pressing, then treated through hot extrusion. The microstructure characterization demonstrated the preferred orientations of both beta-Si(3)N(4)w and Al grains in the as-extruded composites. It indicated that beta-Si(3)N(4)w were aligned along the extrusion direction and Al grains exhibited a distinct <111>(Al) texture. The interface between beta-Si(3)N(4)w and Al was in a good bonding status without voids and reaction products. Effects of extrusion process on the mechanical properties of composites were also investigated. The results indicated the extrusion process had a prominent strengthening effect on the mechanical properties of composites. The maximum yield strength and ultimate tensile strength of composites reached up to 170 and 289 MPa, respectively, accompanied by a 12.3% elongation at fracture when the whisker fraction was 15 vol.%. This improvement was collectively attributed to the densification of composites, the strong interface, and the preferred orientation inside composites. The yield strength of the composites reinforced with 5 vol.% beta-Si(3)N(4)w corresponded well with the theoretical value from different strengthening mechanisms. (C) 2019 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
KeywordMetal-matrix composites (MMC) beta-Si3N4 whiskers Preferred orientation Interface Mechanical properties Extrusion
DOI10.1016/j.jmst.2019.02.003
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27026
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Zhang, Chenxu,Zeng, Yu-Ping,Yao, Dongxu,et al. The improved mechanical properties of Al matrix composites reinforced with oriented beta-Si3N4 whisker[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2019,35(7):1345.
APA Zhang, Chenxu.,Zeng, Yu-Ping.,Yao, Dongxu.,Yin, Jinwei.,Zuo, Kaihui.,...&Liang, Hanqin.(2019).The improved mechanical properties of Al matrix composites reinforced with oriented beta-Si3N4 whisker.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,35(7),1345.
MLA Zhang, Chenxu,et al."The improved mechanical properties of Al matrix composites reinforced with oriented beta-Si3N4 whisker".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 35.7(2019):1345.
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