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  • 文献标题:   Graphene nanosheets-Inconel 718 nanocomposites fabricated by spark plasma sintering of in-situ grown vertically standing graphene nanosheets-Inconel 718 powders
  • 文献类型:   Article
  • 作　　者:   CHEN DS, ZHOU HT, TIAN Y, LUO F, LIU DB, LUO BW
  • 作者关键词:   nickel alloy, nanocomposite, scanning electron microscopy, tensile strength, iron alloy, graphene, tensile testing, grain boundarie, chromium alloy, particle reinforced composite, nanofabrication, elongation, sintering, transmission electron microscopy, plasma cvd, raman spectra, nanomechanic, niobium alloy, molybdenum alloy, nickelbased nanocomposite, inconel 718 alloy powder, plasmaenhanced chemical vapour deposition, spark plasma sintering method, transmission electron microscopy, unreinforced 718 alloy, graphene nanosheetinconel 718 nanocomposite, insitu grown vertically standing graphene nanosheetinconel 718 powder, mechanical improvement, gns718 nanocomposite, microstructure, mechanical propertie, raman spectroscopy, scanning electron microscopy, tensile test, threedimensional net structured vsgns, grain boundarie, tensile strength, elongation
  • 出版物名称:   MICRO NANO LETTERS
  • ISSN:   1750-0443
  • 通讯作者地址:   Aero Engine Corp China
  • 被引频次:   0
  • DOI:   10.1049/mnl.2018.5628
  • 出版年:   2019

▎ 摘　　要

The present work reports a mechanical improvement in nickel-based nanocomposites reinforced by in-situ grown graphene nanosheets (GNSs). First, vertically standing GNSs (VSGNSs) were grown on Inconel 718 alloy (718) powders by plasma-enhanced chemical vapour deposition. Then these powders were used to fabricate GNSs-718 nanocomposites by using spark plasma sintering method. The microstructure and mechanical properties of the nanocomposites were investigated by Raman spectroscopy, scanning electron microscopy, transmission electron microscopy and tensile tests. Testing results showed that three-dimensional net structured VSGNSs were in-situ grown on surfaces of 718 powders. GNSs-718 nanocomposites exhibited homogeneously dispersed GNSs, which distributed mainly along grain boundaries. Transmission electron microscopy indicated that there were clean and strong interfaces between GNSs and nickel-based matrix. Compared to the unreinforced 718 alloy, GNSs-718 nanocomposites showed increased strength and elongation. The relevant strengthening mechanisms involved in GNSs-718 nanocomposites were discussed.