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Microstructures and Tensile Properties of Ultrafine-Grained Ni-(1-3.5) wt% SiCNp Composites Prepared by a Powder Metallurgy Route
Yang, C; Huang, HF; de los Reyes, M; Yan, L; Zhou, XT; Xia, T; Zhang, DL; Huang, HF (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, 2019 Jialuo Rd, Shanghai 201800, Peoples R China.
2015
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Volume28Issue:7Pages:809—816
Subtype期刊文献
AbstractSilicon carbide nanoparticle-reinforced nickel-based composites (Ni-SiCNP), with a SiCNP content ranged from 1 to 3.5 wt%, were prepared using mechanical alloying and spark plasma sintering. In addition, unreinforced pure nickel samples were also prepared for comparative purposes. To characterize the microstructural properties of both the unreinforced pure nickel and the Ni-SiCNP composites transmission electron microscopy (TEM) was used, while their mechanical behavior was investigated using the Vickers pyramid method for hardness measurements and a universal tensile testing machine for tensile tests. TEM results showed an array of dislocation lines decorated in the sintered pure nickel sample, whereas, for the Ni-SiCNP composites, the presence of nano-dispersed SiCNP and twinning crystals was observed. These homogeneously distributed SiCNP were found located either within the matrix, between twins or on grain boundaries. For the Ni-SiCNP composites, coerced coarsening of the SiCNP assembly occurred with increasing SiCNP content. Furtheimore, the grain sizes of the Ni-SiCNP composites were much finer than that of the unreinforced pure nickel, which was considered to be due to the composite ball milling process. In all cases, the Ni-SiCNP composites showed higher strengths and hardness values than the unreinforced pure nickel, likely due to a combination of dispersion strengthening (Orowan effects) and particle strengthening (Hall Petch effects). For the Ni-SiCNP composites, the strength increased initially and then decreased as a function of SiCNP content, whereas their elongation percentages decreased linearly. Compared to all materials tested, the Ni-SiCNP composite containing 1.5% SiC was found more superior considering both their strength and plastic properties.
KeywordSevere Plastic-deformation Matrix Composites Mechanical-properties Dispersion Carbon Ductility Strength Behavior Consolidation Temperature
Language英语
WOS IDWOS:000358553000002
Citation statistics
Cited Times:18[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/24993
Collection中科院上海应用物理研究所2011-2018年
Corresponding AuthorHuang, HF (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, 2019 Jialuo Rd, Shanghai 201800, Peoples R China.
Recommended Citation
GB/T 7714
Yang, C,Huang, HF,de los Reyes, M,et al. Microstructures and Tensile Properties of Ultrafine-Grained Ni-(1-3.5) wt% SiCNp Composites Prepared by a Powder Metallurgy Route[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2015,28(7):809—816.
APA Yang, C.,Huang, HF.,de los Reyes, M.,Yan, L.,Zhou, XT.,...&Huang, HF .(2015).Microstructures and Tensile Properties of Ultrafine-Grained Ni-(1-3.5) wt% SiCNp Composites Prepared by a Powder Metallurgy Route.ACTA METALLURGICA SINICA-ENGLISH LETTERS,28(7),809—816.
MLA Yang, C,et al."Microstructures and Tensile Properties of Ultrafine-Grained Ni-(1-3.5) wt% SiCNp Composites Prepared by a Powder Metallurgy Route".ACTA METALLURGICA SINICA-ENGLISH LETTERS 28.7(2015):809—816.
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