Fracture of severely plastically deformed titanium

Bernhard Völker; Stefan Wurster; Reinhard Pippan; Anton Hohenwarter

doi:10.1016/j.matlet.2021.131382

Fracture of severely plastically deformed titanium

Bernhard Völker, Stefan Wurster, Reinhard Pippan, Anton Hohenwarter

Chair of Materials Physics (430)

Erich Schmid Institute of Materials Science

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

Abstract

The mechanical properties with emphasis on the fracture behaviour of ultrafine-grained Ti processed by high pressure torsion were evaluated. Through this process a substantial refinement of the microstructure was induced. As a consequence, a pronounced increase of tensile strength was achieved compared to conventional Ti while the ductility exhibited only a minor reduction after processing. The fracture toughness in terms of the critical stress intensity factor and crack tip opening displacement was evaluated in different crack growth directions and showed a pronounced orientation dependency, which can be related to the typically elongated microstructure induced by this deformation method.

Original language	English
Article number	131382
Number of pages	4
Journal	Materials letters
Volume	309.2022
Issue number	15 February
Early online date	30 Nov 2021
DOIs	https://doi.org/10.1016/j.matlet.2021.131382
Publication status	Published - 15 Feb 2022

Bibliographical note

Keywords

High pressure torsion
Severe plastic deformation
Titanium
Ultrafine-grained

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10.1016/j.matlet.2021.131382

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abstract = "The mechanical properties with emphasis on the fracture behaviour of ultrafine-grained Ti processed by high pressure torsion were evaluated. Through this process a substantial refinement of the microstructure was induced. As a consequence, a pronounced increase of tensile strength was achieved compared to conventional Ti while the ductility exhibited only a minor reduction after processing. The fracture toughness in terms of the critical stress intensity factor and crack tip opening displacement was evaluated in different crack growth directions and showed a pronounced orientation dependency, which can be related to the typically elongated microstructure induced by this deformation method.",

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AU - Völker, Bernhard

AU - Wurster, Stefan

AU - Pippan, Reinhard

AU - Hohenwarter, Anton

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N2 - The mechanical properties with emphasis on the fracture behaviour of ultrafine-grained Ti processed by high pressure torsion were evaluated. Through this process a substantial refinement of the microstructure was induced. As a consequence, a pronounced increase of tensile strength was achieved compared to conventional Ti while the ductility exhibited only a minor reduction after processing. The fracture toughness in terms of the critical stress intensity factor and crack tip opening displacement was evaluated in different crack growth directions and showed a pronounced orientation dependency, which can be related to the typically elongated microstructure induced by this deformation method.

AB - The mechanical properties with emphasis on the fracture behaviour of ultrafine-grained Ti processed by high pressure torsion were evaluated. Through this process a substantial refinement of the microstructure was induced. As a consequence, a pronounced increase of tensile strength was achieved compared to conventional Ti while the ductility exhibited only a minor reduction after processing. The fracture toughness in terms of the critical stress intensity factor and crack tip opening displacement was evaluated in different crack growth directions and showed a pronounced orientation dependency, which can be related to the typically elongated microstructure induced by this deformation method.

KW - High pressure torsion

KW - Severe plastic deformation

KW - Titanium

KW - Ultrafine-grained

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VL - 309.2022

JO - Materials letters

JF - Materials letters

IS - 15 February

M1 - 131382

ER -

Fracture of severely plastically deformed titanium

Abstract

Bibliographical note

Keywords

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