Topological interlocking and damage mechanisms in periodic Ti                         2                         AlC-Al building block composites

Martin Stumpf; Xiaomeng Fan; Jonas Biggemann; Peter Greil; Tobias Fey

doi:10.1016/j.jeurceramsoc.2019.01.047

Topological interlocking and damage mechanisms in periodic Ti ₂ AlC-Al building block composites

Martin Stumpf, Xiaomeng Fan, Jonas Biggemann, Peter Greil, Tobias Fey

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

Ceramic Ti ₂ AlC building blocks of 4 × 1.24 × 1.24 mm³ size were prepared by injection molding and assembled to brick-and-mortar structures with tetragonal, monoclinic and triclinic unit cells. The single building blocks were bonded with an Al-loaded polysiloxane adhesive, which was afterwards pyrolized. Afterwards the 3D-assemblies were infiltrated with an Al-melt to fabricate dense 0–3 ceramic-metal composites. The influence of the unit cell of the resulting Ti ₂ AlC-Al composites was investigated regarding the mechanical properties and damage mechanisms in bending tests. The developed near-net shape fabrication process shows great potential to manufacture structured ceramic-metal composites with high toughness and complex shape. Due to their ductile behavior scaffold applications are possible. The calculated initial fracture toughness of monolithic Ti ₂ AlC could be improved from 5.0 MPa m ^0.5 to 14.5 MPa m ^0.5 for the monoclinic assembly and 14.7 MPa m ^0.5 for the triclinic assembly, corresponding to an increase of 191%.

Original language	English
Pages (from-to)	2003-2009
Number of pages	7
Journal	Journal of the European Ceramic Society
Volume	39
Issue number	6
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2019.01.047
State	Published - Jun 2019
Externally published	Yes

Keywords

Brick-and-mortar composites
Building blocks
MAX-Phase
Scaffold
Topological toughening

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10.1016/j.jeurceramsoc.2019.01.047

Cite this

@article{ef4f85175e4c43d0b7f4bbc63e9d9ac9,

title = " Topological interlocking and damage mechanisms in periodic Ti 2 AlC-Al building block composites ",

abstract = " Ceramic Ti 2 AlC building blocks of 4 × 1.24 × 1.24 mm³ size were prepared by injection molding and assembled to brick-and-mortar structures with tetragonal, monoclinic and triclinic unit cells. The single building blocks were bonded with an Al-loaded polysiloxane adhesive, which was afterwards pyrolized. Afterwards the 3D-assemblies were infiltrated with an Al-melt to fabricate dense 0–3 ceramic-metal composites. The influence of the unit cell of the resulting Ti 2 AlC-Al composites was investigated regarding the mechanical properties and damage mechanisms in bending tests. The developed near-net shape fabrication process shows great potential to manufacture structured ceramic-metal composites with high toughness and complex shape. Due to their ductile behavior scaffold applications are possible. The calculated initial fracture toughness of monolithic Ti 2 AlC could be improved from 5.0 MPa m 0.5 to 14.5 MPa m 0.5 for the monoclinic assembly and 14.7 MPa m 0.5 for the triclinic assembly, corresponding to an increase of 191%.",

keywords = "Brick-and-mortar composites, Building blocks, MAX-Phase, Scaffold, Topological toughening",

author = "Martin Stumpf and Xiaomeng Fan and Jonas Biggemann and Peter Greil and Tobias Fey",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

year = "2019",

month = jun,

doi = "10.1016/j.jeurceramsoc.2019.01.047",

language = "英语",

volume = "39",

pages = "2003--2009",

journal = "Journal of the European Ceramic Society",

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publisher = "Elsevier B.V.",

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}

Stumpf, M, Fan, X, Biggemann, J, Greil, P & Fey, T 2019, ' Topological interlocking and damage mechanisms in periodic Ti ₂ AlC-Al building block composites ', Journal of the European Ceramic Society, vol. 39, no. 6, pp. 2003-2009. https://doi.org/10.1016/j.jeurceramsoc.2019.01.047

Topological interlocking and damage mechanisms in periodic Ti ₂ AlC-Al building block composites . / Stumpf, Martin; Fan, Xiaomeng; Biggemann, Jonas et al.
In: Journal of the European Ceramic Society, Vol. 39, No. 6, 06.2019, p. 2003-2009.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Topological interlocking and damage mechanisms in periodic Ti 2 AlC-Al building block composites

AU - Stumpf, Martin

AU - Fan, Xiaomeng

AU - Biggemann, Jonas

AU - Greil, Peter

AU - Fey, Tobias

PY - 2019/6

Y1 - 2019/6

N2 - Ceramic Ti 2 AlC building blocks of 4 × 1.24 × 1.24 mm³ size were prepared by injection molding and assembled to brick-and-mortar structures with tetragonal, monoclinic and triclinic unit cells. The single building blocks were bonded with an Al-loaded polysiloxane adhesive, which was afterwards pyrolized. Afterwards the 3D-assemblies were infiltrated with an Al-melt to fabricate dense 0–3 ceramic-metal composites. The influence of the unit cell of the resulting Ti 2 AlC-Al composites was investigated regarding the mechanical properties and damage mechanisms in bending tests. The developed near-net shape fabrication process shows great potential to manufacture structured ceramic-metal composites with high toughness and complex shape. Due to their ductile behavior scaffold applications are possible. The calculated initial fracture toughness of monolithic Ti 2 AlC could be improved from 5.0 MPa m 0.5 to 14.5 MPa m 0.5 for the monoclinic assembly and 14.7 MPa m 0.5 for the triclinic assembly, corresponding to an increase of 191%.

AB - Ceramic Ti 2 AlC building blocks of 4 × 1.24 × 1.24 mm³ size were prepared by injection molding and assembled to brick-and-mortar structures with tetragonal, monoclinic and triclinic unit cells. The single building blocks were bonded with an Al-loaded polysiloxane adhesive, which was afterwards pyrolized. Afterwards the 3D-assemblies were infiltrated with an Al-melt to fabricate dense 0–3 ceramic-metal composites. The influence of the unit cell of the resulting Ti 2 AlC-Al composites was investigated regarding the mechanical properties and damage mechanisms in bending tests. The developed near-net shape fabrication process shows great potential to manufacture structured ceramic-metal composites with high toughness and complex shape. Due to their ductile behavior scaffold applications are possible. The calculated initial fracture toughness of monolithic Ti 2 AlC could be improved from 5.0 MPa m 0.5 to 14.5 MPa m 0.5 for the monoclinic assembly and 14.7 MPa m 0.5 for the triclinic assembly, corresponding to an increase of 191%.

KW - Brick-and-mortar composites

KW - Building blocks

KW - MAX-Phase

KW - Scaffold

KW - Topological toughening

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JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 6

ER -

Topological interlocking and damage mechanisms in periodic Ti ₂ AlC-Al building block composites

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Keywords

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