Bulk titanium-graphene nanocomposites fabricated by selective laser melting

Zengrong Hu, Dini Wang, Changjun Chen, Xiaonan Wang, Xiaming Chen, Qiong Nian

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In this report, bulk graphene-reinforced titanium (Ti-Gr) nanocomposite with millimeter thickness was fabricated by selective laser melting process. Demonstrated by the characterizations of scanning electron microscopy, energy dispersive spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and Raman spectra, graphene nanoplatelets were successfully embedded into the titanium matrix with a uniform dispersion due to a fast heating-cooling process. High-resolution transmission electron microscopy was used to investigate the interface between titanium and graphene, where a certain amount of carbide was formed attribute to the chemical reaction between them during multilayer laser melting. A high density of dislocations was observed surrounding the graphene nanoplatelets in titanium matrix. The strength and elastic modulus of the nanocomposites were significantly improved, which has been demonstrated by nano-indentation tests. The hardness of the bulk Ti-Gr nanocomposites was approximately 1.27 times higher than pristine Ti counterpart. The strengthening mechanisms were discussed in detail.

Original languageEnglish (US)
JournalJournal of Materials Research
DOIs
StatePublished - Jan 1 2019

Fingerprint

Graphite
Titanium
Graphene
Nanocomposites
nanocomposites
graphene
Melting
titanium
melting
Lasers
lasers
Nanoindentation
matrices
High resolution transmission electron microscopy
nanoindentation
carbides
Carbides
Raman scattering
Energy dispersive spectroscopy
Chemical reactions

Keywords

  • graphene
  • nanocomposites
  • selective laser melting

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Bulk titanium-graphene nanocomposites fabricated by selective laser melting. / Hu, Zengrong; Wang, Dini; Chen, Changjun; Wang, Xiaonan; Chen, Xiaming; Nian, Qiong.

In: Journal of Materials Research, 01.01.2019.

Research output: Contribution to journalArticle

Hu, Zengrong ; Wang, Dini ; Chen, Changjun ; Wang, Xiaonan ; Chen, Xiaming ; Nian, Qiong. / Bulk titanium-graphene nanocomposites fabricated by selective laser melting. In: Journal of Materials Research. 2019.
@article{b72d77830c974c75b29b872e57cb043a,
title = "Bulk titanium-graphene nanocomposites fabricated by selective laser melting",
abstract = "In this report, bulk graphene-reinforced titanium (Ti-Gr) nanocomposite with millimeter thickness was fabricated by selective laser melting process. Demonstrated by the characterizations of scanning electron microscopy, energy dispersive spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and Raman spectra, graphene nanoplatelets were successfully embedded into the titanium matrix with a uniform dispersion due to a fast heating-cooling process. High-resolution transmission electron microscopy was used to investigate the interface between titanium and graphene, where a certain amount of carbide was formed attribute to the chemical reaction between them during multilayer laser melting. A high density of dislocations was observed surrounding the graphene nanoplatelets in titanium matrix. The strength and elastic modulus of the nanocomposites were significantly improved, which has been demonstrated by nano-indentation tests. The hardness of the bulk Ti-Gr nanocomposites was approximately 1.27 times higher than pristine Ti counterpart. The strengthening mechanisms were discussed in detail.",
keywords = "graphene, nanocomposites, selective laser melting",
author = "Zengrong Hu and Dini Wang and Changjun Chen and Xiaonan Wang and Xiaming Chen and Qiong Nian",
year = "2019",
month = "1",
day = "1",
doi = "10.1557/jmr.2019.65",
language = "English (US)",
journal = "Journal of Materials Research",
issn = "0884-2914",
publisher = "Materials Research Society",

}

TY - JOUR

T1 - Bulk titanium-graphene nanocomposites fabricated by selective laser melting

AU - Hu, Zengrong

AU - Wang, Dini

AU - Chen, Changjun

AU - Wang, Xiaonan

AU - Chen, Xiaming

AU - Nian, Qiong

PY - 2019/1/1

Y1 - 2019/1/1

N2 - In this report, bulk graphene-reinforced titanium (Ti-Gr) nanocomposite with millimeter thickness was fabricated by selective laser melting process. Demonstrated by the characterizations of scanning electron microscopy, energy dispersive spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and Raman spectra, graphene nanoplatelets were successfully embedded into the titanium matrix with a uniform dispersion due to a fast heating-cooling process. High-resolution transmission electron microscopy was used to investigate the interface between titanium and graphene, where a certain amount of carbide was formed attribute to the chemical reaction between them during multilayer laser melting. A high density of dislocations was observed surrounding the graphene nanoplatelets in titanium matrix. The strength and elastic modulus of the nanocomposites were significantly improved, which has been demonstrated by nano-indentation tests. The hardness of the bulk Ti-Gr nanocomposites was approximately 1.27 times higher than pristine Ti counterpart. The strengthening mechanisms were discussed in detail.

AB - In this report, bulk graphene-reinforced titanium (Ti-Gr) nanocomposite with millimeter thickness was fabricated by selective laser melting process. Demonstrated by the characterizations of scanning electron microscopy, energy dispersive spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and Raman spectra, graphene nanoplatelets were successfully embedded into the titanium matrix with a uniform dispersion due to a fast heating-cooling process. High-resolution transmission electron microscopy was used to investigate the interface between titanium and graphene, where a certain amount of carbide was formed attribute to the chemical reaction between them during multilayer laser melting. A high density of dislocations was observed surrounding the graphene nanoplatelets in titanium matrix. The strength and elastic modulus of the nanocomposites were significantly improved, which has been demonstrated by nano-indentation tests. The hardness of the bulk Ti-Gr nanocomposites was approximately 1.27 times higher than pristine Ti counterpart. The strengthening mechanisms were discussed in detail.

KW - graphene

KW - nanocomposites

KW - selective laser melting

UR - http://www.scopus.com/inward/record.url?scp=85063004068&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85063004068&partnerID=8YFLogxK

U2 - 10.1557/jmr.2019.65

DO - 10.1557/jmr.2019.65

M3 - Article

AN - SCOPUS:85063004068

JO - Journal of Materials Research

JF - Journal of Materials Research

SN - 0884-2914

ER -